diff --git a/packages/mui-material/src/CardHeader/CardHeader.js b/packages/mui-material/src/CardHeader/CardHeader.js
index 2e281423b7d762..ae0ad34588c713 100644
--- a/packages/mui-material/src/CardHeader/CardHeader.js
+++ b/packages/mui-material/src/CardHeader/CardHeader.js
@@ -64,12 +64,10 @@ const CardHeaderContent = styled('div', {
   slot: 'Content',
 })({
   flex: '1 1 auto',
-  [`.${typographyClasses.root}:where(& .${cardHeaderClasses.title})`]: {
-    display: 'block',
-  },
-  [`.${typographyClasses.root}:where(& .${cardHeaderClasses.subheader})`]: {
-    display: 'block',
-  },
+  [`.${typographyClasses.root}:where(& .${cardHeaderClasses.title}), .${typographyClasses.root}:where(& .${cardHeaderClasses.subheader})`]:
+    {
+      display: 'block',
+    },
 });
 
 const CardHeader = React.forwardRef(function CardHeader(inProps, ref) {
diff --git a/packages/mui-material/src/ListItemText/ListItemText.js b/packages/mui-material/src/ListItemText/ListItemText.js
index c4359a63289c4d..9b1a66aabcf573 100644
--- a/packages/mui-material/src/ListItemText/ListItemText.js
+++ b/packages/mui-material/src/ListItemText/ListItemText.js
@@ -42,12 +42,10 @@ const ListItemTextRoot = styled('div', {
   minWidth: 0,
   marginTop: 4,
   marginBottom: 4,
-  [`.${typographyClasses.root}:where(& .${listItemTextClasses.primary})`]: {
-    display: 'block',
-  },
-  [`.${typographyClasses.root}:where(& .${listItemTextClasses.secondary})`]: {
-    display: 'block',
-  },
+  [`.${typographyClasses.root}:where(& .${listItemTextClasses.primary}), .${typographyClasses.root}:where(& .${listItemTextClasses.secondary})`]:
+    {
+      display: 'block',
+    },
   variants: [
     {
       props: ({ ownerState }) => ownerState.primary && ownerState.secondary,
diff --git a/packages/mui-material/src/SpeedDialIcon/SpeedDialIcon.js b/packages/mui-material/src/SpeedDialIcon/SpeedDialIcon.js
index 73c4c66477e375..9954f271fee9e4 100644
--- a/packages/mui-material/src/SpeedDialIcon/SpeedDialIcon.js
+++ b/packages/mui-material/src/SpeedDialIcon/SpeedDialIcon.js
@@ -62,6 +62,10 @@ const SpeedDialIconRoot = styled('span', {
           [`& .${speedDialIconClasses.icon}`]: {
             transform: 'rotate(45deg)',
           },
+          [`& .${speedDialIconClasses.openIcon}`]: {
+            transform: 'rotate(0deg)',
+            opacity: 1,
+          },
         },
       },
       {
@@ -72,15 +76,6 @@ const SpeedDialIconRoot = styled('span', {
           },
         },
       },
-      {
-        props: ({ ownerState }) => ownerState.open,
-        style: {
-          [`& .${speedDialIconClasses.openIcon}`]: {
-            transform: 'rotate(0deg)',
-            opacity: 1,
-          },
-        },
-      },
     ],
   })),
 );
diff --git a/packages/mui-material/src/StepIcon/StepIcon.js b/packages/mui-material/src/StepIcon/StepIcon.js
index 76a10114622c07..d00e1834d58c7c 100644
--- a/packages/mui-material/src/StepIcon/StepIcon.js
+++ b/packages/mui-material/src/StepIcon/StepIcon.js
@@ -32,10 +32,7 @@ const StepIconRoot = styled(SvgIcon, {
       duration: theme.transitions.duration.shortest,
     }),
     color: (theme.vars || theme).palette.text.disabled,
-    [`&.${stepIconClasses.completed}`]: {
-      color: (theme.vars || theme).palette.primary.main,
-    },
-    [`&.${stepIconClasses.active}`]: {
+    [`&.${stepIconClasses.completed}, &.${stepIconClasses.active}`]: {
       color: (theme.vars || theme).palette.primary.main,
     },
     [`&.${stepIconClasses.error}`]: {
diff --git a/packages/mui-material/src/StepLabel/StepLabel.js b/packages/mui-material/src/StepLabel/StepLabel.js
index 80626419810b46..40fac5edc66641 100644
--- a/packages/mui-material/src/StepLabel/StepLabel.js
+++ b/packages/mui-material/src/StepLabel/StepLabel.js
@@ -83,11 +83,7 @@ const StepLabelLabel = styled('span', {
     transition: theme.transitions.create('color', {
       duration: theme.transitions.duration.shortest,
     }),
-    [`&.${stepLabelClasses.active}`]: {
-      color: (theme.vars || theme).palette.text.primary,
-      fontWeight: 500,
-    },
-    [`&.${stepLabelClasses.completed}`]: {
+    [`&.${stepLabelClasses.active}, &.${stepLabelClasses.completed}`]: {
       color: (theme.vars || theme).palette.text.primary,
       fontWeight: 500,
     },