diff --git a/b64.cpp b/b64.cpp
index b926cad..dfc43a1 100644
--- a/b64.cpp
+++ b/b64.cpp
@@ -18,14 +18,14 @@ void main()
 }
 */
 
-int b64_encode(const unsigned char* aInput, int aInputLen, unsigned char* aOutput, int aOutputLen)
+void b64_encode(const unsigned char* aInput, int aInputLen, unsigned char* aOutput, int aOutputLen)
 {
     // Work out if we've got enough space to encode the input
     // Every 6 bits of input becomes a byte of output
     if (aOutputLen < (aInputLen*8)/6)
     {
         // FIXME Should we return an error here, or just the length
-        return (aInputLen*8)/6;
+        // return (aInputLen*8)/6;
     }
 
     // If we get here we've got enough space to do the encoding
diff --git a/b64.h b/b64.h
index cdb1226..f467b03 100644
--- a/b64.h
+++ b/b64.h
@@ -1,6 +1,6 @@
 #ifndef b64_h
 #define b64_h
 
-int b64_encode(const unsigned char* aInput, int aInputLen, unsigned char* aOutput, int aOutputLen);
+void b64_encode(const unsigned char* aInput, int aInputLen, unsigned char* aOutput, int aOutputLen);
 
 #endif