diff --git a/src/pkg/runtime/memclr_386.s b/src/pkg/runtime/memclr_386.s
index 4b7580cb49..aeabad413e 100644
--- a/src/pkg/runtime/memclr_386.s
+++ b/src/pkg/runtime/memclr_386.s
@@ -63,6 +63,7 @@ clr_loop:
 clr_1or2:
 	MOVB	AX, (DI)
 	MOVB	AX, -1(DI)(BX*1)
+	RET
 clr_0:
 	RET
 clr_3or4:
diff --git a/src/pkg/runtime/memclr_amd64.s b/src/pkg/runtime/memclr_amd64.s
index 6b79363b24..01c6a415c0 100644
--- a/src/pkg/runtime/memclr_amd64.s
+++ b/src/pkg/runtime/memclr_amd64.s
@@ -62,6 +62,7 @@ clr_loop:
 clr_1or2:
 	MOVB	AX, (DI)
 	MOVB	AX, -1(DI)(BX*1)
+	RET
 clr_0:
 	RET
 clr_3or4:
diff --git a/src/pkg/runtime/memclr_plan9_386.s b/src/pkg/runtime/memclr_plan9_386.s
index 9b496785a2..ed5dbbd3c6 100644
--- a/src/pkg/runtime/memclr_plan9_386.s
+++ b/src/pkg/runtime/memclr_plan9_386.s
@@ -32,6 +32,7 @@ clr_tail:
 clr_1or2:
 	MOVB	AX, (DI)
 	MOVB	AX, -1(DI)(BX*1)
+	RET
 clr_0:
 	RET
 clr_3or4:
diff --git a/src/pkg/runtime/memmove_386.s b/src/pkg/runtime/memmove_386.s
index 1fd9ba2bcc..51b08d56d3 100644
--- a/src/pkg/runtime/memmove_386.s
+++ b/src/pkg/runtime/memmove_386.s
@@ -115,6 +115,7 @@ move_1or2:
 	MOVB	-1(SI)(BX*1), CX
 	MOVB	AX, (DI)
 	MOVB	CX, -1(DI)(BX*1)
+	RET
 move_0:
 	RET
 move_3or4:
diff --git a/src/pkg/runtime/memmove_amd64.s b/src/pkg/runtime/memmove_amd64.s
index 672fce90b3..339c5dd410 100644
--- a/src/pkg/runtime/memmove_amd64.s
+++ b/src/pkg/runtime/memmove_amd64.s
@@ -122,6 +122,7 @@ move_1or2:
 	MOVB	-1(SI)(BX*1), CX
 	MOVB	AX, (DI)
 	MOVB	CX, -1(DI)(BX*1)
+	RET
 move_0:
 	RET
 move_3or4:
diff --git a/src/pkg/runtime/memmove_plan9_386.s b/src/pkg/runtime/memmove_plan9_386.s
index 187616cd0a..5ac5c27d40 100644
--- a/src/pkg/runtime/memmove_plan9_386.s
+++ b/src/pkg/runtime/memmove_plan9_386.s
@@ -101,6 +101,7 @@ move_1or2:
 	MOVB	-1(SI)(BX*1), CX
 	MOVB	AX, (DI)
 	MOVB	CX, -1(DI)(BX*1)
+	RET
 move_0:
 	RET
 move_3or4:
diff --git a/src/pkg/runtime/memmove_plan9_amd64.s b/src/pkg/runtime/memmove_plan9_amd64.s
index 60108273cf..3664e45ae2 100644
--- a/src/pkg/runtime/memmove_plan9_amd64.s
+++ b/src/pkg/runtime/memmove_plan9_amd64.s
@@ -104,6 +104,7 @@ move_1or2:
 	MOVB	-1(SI)(BX*1), CX
 	MOVB	AX, (DI)
 	MOVB	CX, -1(DI)(BX*1)
+	RET
 move_0:
 	RET
 move_3or4: