diff --git a/src/dotty/tools/dotc/backend/jvm/BCodeBodyBuilder.scala b/src/dotty/tools/dotc/backend/jvm/BCodeBodyBuilder.scala
index 72fe46a22231..16b0e2d93c69 100755
--- a/src/dotty/tools/dotc/backend/jvm/BCodeBodyBuilder.scala
+++ b/src/dotty/tools/dotc/backend/jvm/BCodeBodyBuilder.scala
@@ -12,7 +12,7 @@ package jvm
 import scala.collection.{ mutable, immutable }
 import scala.annotation.switch
 
-import scala.tools.asm
+import dotty.tools.asm
 
 import dotc.ast.Trees._
 import core.Types.Type
diff --git a/src/dotty/tools/dotc/backend/jvm/BCodeGlue.scala b/src/dotty/tools/dotc/backend/jvm/BCodeGlue.scala
index 2e1102d2d307..f9386223fa9b 100755
--- a/src/dotty/tools/dotc/backend/jvm/BCodeGlue.scala
+++ b/src/dotty/tools/dotc/backend/jvm/BCodeGlue.scala
@@ -7,7 +7,7 @@ package dotty.tools
 package dotc
 package backend.jvm
 
-import scala.tools.asm
+import dotty.tools.asm
 import scala.annotation.switch
 import scala.collection.{ immutable, mutable }
 
@@ -256,8 +256,8 @@ abstract class BCodeGlue {
     /*
      * can-multi-thread
      */
-    def toASMType: scala.tools.asm.Type = {
-      import scala.tools.asm
+    def toASMType: dotty.tools.asm.Type = {
+      import dotty.tools.asm
       // using `asm.Type.SHORT` instead of `BType.SHORT` because otherwise "warning: could not emit switch for @switch annotated match"
       (sort: @switch) match {
         case asm.Type.VOID    => asm.Type.VOID_TYPE
@@ -533,7 +533,7 @@ abstract class BCodeGlue {
      * can-multi-thread
      */
     def getOpcode(opcode: Int): Int = {
-      import scala.tools.asm.Opcodes
+      import dotty.tools.asm.Opcodes
       if (opcode == Opcodes.IALOAD || opcode == Opcodes.IASTORE) {
         // the offset for IALOAD or IASTORE is in byte 1 of 'off' for
         // primitive types (buf == null)
diff --git a/src/dotty/tools/dotc/backend/jvm/BCodeHelpers.scala b/src/dotty/tools/dotc/backend/jvm/BCodeHelpers.scala
index 8dc825ae62e4..76e8612a4891 100755
--- a/src/dotty/tools/dotc/backend/jvm/BCodeHelpers.scala
+++ b/src/dotty/tools/dotc/backend/jvm/BCodeHelpers.scala
@@ -7,7 +7,7 @@ package dotty.tools
 package dotc
 package backend.jvm
 
-import scala.tools.asm
+import dotty.tools.asm
 import scala.annotation.switch
 import scala.collection.{ immutable, mutable }
 import dotty.tools.io.AbstractFile
@@ -823,7 +823,7 @@ abstract class BCodeHelpers extends BCodeTypes with BytecodeWriters {
         // Run the signature parser to catch bogus signatures.
         val isValidSignature = wrap {
           // Alternative: scala.tools.reflect.SigParser (frontend to sun.reflect.generics.parser.SignatureParser)
-          import scala.tools.asm.util.CheckClassAdapter
+          import dotty.tools.asm.util.CheckClassAdapter
           if (sym.isMethod)    { CheckClassAdapter checkMethodSignature sig }
           else if (sym.isTerm) { CheckClassAdapter checkFieldSignature  sig }
           else                 { CheckClassAdapter checkClassSignature  sig }
diff --git a/src/dotty/tools/dotc/backend/jvm/BCodeIdiomatic.scala b/src/dotty/tools/dotc/backend/jvm/BCodeIdiomatic.scala
index 3e5c0d2ce169..b242a485c8a3 100755
--- a/src/dotty/tools/dotc/backend/jvm/BCodeIdiomatic.scala
+++ b/src/dotty/tools/dotc/backend/jvm/BCodeIdiomatic.scala
@@ -7,7 +7,7 @@ package dotty.tools
 package dotc
 package backend.jvm
 
-import scala.tools.asm
+import dotty.tools.asm
 import scala.annotation.switch
 import scala.collection.{ immutable, mutable }
 import collection.convert.Wrappers.JListWrapper
diff --git a/src/dotty/tools/dotc/backend/jvm/BCodeSkelBuilder.scala b/src/dotty/tools/dotc/backend/jvm/BCodeSkelBuilder.scala
index c0e04cc5e0b9..d0795eae3e70 100755
--- a/src/dotty/tools/dotc/backend/jvm/BCodeSkelBuilder.scala
+++ b/src/dotty/tools/dotc/backend/jvm/BCodeSkelBuilder.scala
@@ -13,7 +13,7 @@ import scala.collection.{ mutable, immutable }
 import scala.tools.nsc.symtab._
 import scala.annotation.switch
 
-import scala.tools.asm
+import dotty.tools.asm
 
 import dotc.ast.Trees._
 import dotc.core.Types.Type
diff --git a/src/dotty/tools/dotc/backend/jvm/BCodeSyncAndTry.scala b/src/dotty/tools/dotc/backend/jvm/BCodeSyncAndTry.scala
index 0b8ff7a578e0..700dac0673ba 100755
--- a/src/dotty/tools/dotc/backend/jvm/BCodeSyncAndTry.scala
+++ b/src/dotty/tools/dotc/backend/jvm/BCodeSyncAndTry.scala
@@ -12,7 +12,7 @@ package jvm
 import scala.collection.{ mutable, immutable }
 import scala.annotation.switch
 
-import scala.tools.asm
+import dotty.tools.asm
 
 import dotc.ast.Trees._
 import dotc.core.Types.Type
diff --git a/src/dotty/tools/dotc/backend/jvm/BCodeTypes.scala b/src/dotty/tools/dotc/backend/jvm/BCodeTypes.scala
index dcca155b7e54..6abcf623f4f6 100755
--- a/src/dotty/tools/dotc/backend/jvm/BCodeTypes.scala
+++ b/src/dotty/tools/dotc/backend/jvm/BCodeTypes.scala
@@ -7,7 +7,7 @@ package dotty.tools
 package dotc
 package backend.jvm
 
-import scala.tools.asm
+import dotty.tools.asm
 import scala.collection.{ immutable, mutable }
 
 import dotc.ast.Trees.Tree
diff --git a/src/dotty/tools/dotc/backend/jvm/BytecodeWriters.scala b/src/dotty/tools/dotc/backend/jvm/BytecodeWriters.scala
index 6aea13233773..b414f6949509 100755
--- a/src/dotty/tools/dotc/backend/jvm/BytecodeWriters.scala
+++ b/src/dotty/tools/dotc/backend/jvm/BytecodeWriters.scala
@@ -85,7 +85,7 @@ trait BytecodeWriters {
    *
    * */
   trait AsmpBytecodeWriter extends BytecodeWriter {
-    import scala.tools.asm
+    import dotty.tools.asm
 
     private val baseDir = Directory(settings.Ygenasmp.value).createDirectory()
 
@@ -95,7 +95,7 @@ trait BytecodeWriters {
         val cnode = new asm.tree.ClassNode()
         val cr    = new asm.ClassReader(jclassBytes)
         cr.accept(cnode, 0)
-        val trace = new scala.tools.asm.util.TraceClassVisitor(new java.io.PrintWriter(new java.io.StringWriter()))
+        val trace = new dotty.tools.asm.util.TraceClassVisitor(new java.io.PrintWriter(new java.io.StringWriter()))
         cnode.accept(trace)
         trace.p.print(pw)
       }
diff --git a/src/dotty/tools/dotc/backend/jvm/GenBCode.scala b/src/dotty/tools/dotc/backend/jvm/GenBCode.scala
index 572ac0ee0da0..d52abbc5c748 100755
--- a/src/dotty/tools/dotc/backend/jvm/GenBCode.scala
+++ b/src/dotty/tools/dotc/backend/jvm/GenBCode.scala
@@ -12,7 +12,7 @@ package jvm
 import scala.collection.{ mutable, immutable }
 import scala.annotation.switch
 
-import scala.tools.asm
+import dotty.tools.asm
 
 import dotc.ast.Trees
 import dotc.core.Types.Type
diff --git a/src/dotty/tools/dotc/backend/jvm/icodes.scala b/src/dotty/tools/dotc/backend/jvm/icodes.scala
index 8adb4e1aee4c..1bf364527118 100755
--- a/src/dotty/tools/dotc/backend/jvm/icodes.scala
+++ b/src/dotty/tools/dotc/backend/jvm/icodes.scala
@@ -32,48 +32,48 @@ object icodes {
   case object EQ extends TestOp {
     def negate() = NE
     override def toString() = "EQ"
-    override def opcodeIF()     = scala.tools.asm.Opcodes.IFEQ
-    override def opcodeIFICMP() = scala.tools.asm.Opcodes.IF_ICMPEQ
+    override def opcodeIF()     = dotty.tools.asm.Opcodes.IFEQ
+    override def opcodeIFICMP() = dotty.tools.asm.Opcodes.IF_ICMPEQ
   }
 
   /** A non-equality test */
   case object NE extends TestOp {
     def negate() = EQ
     override def toString() = "NE"
-    override def opcodeIF()     = scala.tools.asm.Opcodes.IFNE
-    override def opcodeIFICMP() = scala.tools.asm.Opcodes.IF_ICMPNE
+    override def opcodeIF()     = dotty.tools.asm.Opcodes.IFNE
+    override def opcodeIFICMP() = dotty.tools.asm.Opcodes.IF_ICMPNE
   }
 
   /** A less-than test */
   case object LT extends TestOp {
     def negate() = GE
     override def toString() = "LT"
-    override def opcodeIF()     = scala.tools.asm.Opcodes.IFLT
-    override def opcodeIFICMP() = scala.tools.asm.Opcodes.IF_ICMPLT
+    override def opcodeIF()     = dotty.tools.asm.Opcodes.IFLT
+    override def opcodeIFICMP() = dotty.tools.asm.Opcodes.IF_ICMPLT
   }
 
   /** A greater-than-or-equal test */
   case object GE extends TestOp {
     def negate() = LT
     override def toString() = "GE"
-    override def opcodeIF()     = scala.tools.asm.Opcodes.IFGE
-    override def opcodeIFICMP() = scala.tools.asm.Opcodes.IF_ICMPGE
+    override def opcodeIF()     = dotty.tools.asm.Opcodes.IFGE
+    override def opcodeIFICMP() = dotty.tools.asm.Opcodes.IF_ICMPGE
   }
 
   /** A less-than-or-equal test */
   case object LE extends TestOp {
     def negate() = GT
     override def toString() = "LE"
-    override def opcodeIF()     = scala.tools.asm.Opcodes.IFLE
-    override def opcodeIFICMP() = scala.tools.asm.Opcodes.IF_ICMPLE
+    override def opcodeIF()     = dotty.tools.asm.Opcodes.IFLE
+    override def opcodeIFICMP() = dotty.tools.asm.Opcodes.IF_ICMPLE
   }
 
   /** A greater-than test */
   case object GT extends TestOp {
     def negate() = LE
     override def toString() = "GT"
-    override def opcodeIF()     = scala.tools.asm.Opcodes.IFGT
-    override def opcodeIFICMP() = scala.tools.asm.Opcodes.IF_ICMPGT
+    override def opcodeIF()     = dotty.tools.asm.Opcodes.IFGT
+    override def opcodeIFICMP() = dotty.tools.asm.Opcodes.IF_ICMPGT
   }
 
   /** This class represents an arithmetic operation. */