diff --git a/src/internal/bytealg/compare_wasm.s b/src/internal/bytealg/compare_wasm.s
index 2d28215b1a..dc8fb33cfb 100644
--- a/src/internal/bytealg/compare_wasm.s
+++ b/src/internal/bytealg/compare_wasm.s
@@ -45,9 +45,8 @@ TEXT cmpbody<>(SB), NOSPLIT, $0-0
 	I32WrapI64
 	Call memcmp<>(SB)
 	I64ExtendI32S
-	Set R5
+	Tee R5
 
-	Get R5
 	I64Eqz
 	If
 		// check length
diff --git a/src/runtime/sys_wasm.s b/src/runtime/sys_wasm.s
index 0cd1fe5080..41260bdf23 100644
--- a/src/runtime/sys_wasm.s
+++ b/src/runtime/sys_wasm.s
@@ -17,10 +17,9 @@ loop:
 		Get R2
 		I32Const $1
 		I32Sub
-		Set R2
+		Tee R2
 
 		// n == 0
-		Get R2
 		I32Eqz
 		If
 			Return
@@ -54,10 +53,9 @@ loop:
 		Get R1
 		I32Const $1
 		I32Sub
-		Set R1
+		Tee R1
 
 		// n == 0
-		Get R1
 		I32Eqz
 		If
 			Return