diff --git a/include/cglm/vec3.h b/include/cglm/vec3.h
index 6f42855..2be7173 100644
--- a/include/cglm/vec3.h
+++ b/include/cglm/vec3.h
@@ -247,8 +247,8 @@ glm_vec_scale_as(vec3 v, float s, vec3 dest) {
   float norm;
   norm = glm_vec_norm(v);
 
-  if (norm == 0) {
-    glm_vec_copy(v, dest);
+  if (norm == 0.0f) {
+    glm_vec_zero(dest);
     return;
   }
 
diff --git a/include/cglm/vec4.h b/include/cglm/vec4.h
index 44c6a31..b28d9fd 100644
--- a/include/cglm/vec4.h
+++ b/include/cglm/vec4.h
@@ -291,8 +291,8 @@ glm_vec4_scale_as(vec4 v, float s, vec4 dest) {
   float norm;
   norm = glm_vec4_norm(v);
 
-  if (norm == 0) {
-    glm_vec4_copy(v, dest);
+  if (norm == 0.0f) {
+    glm_vec4_zero(dest);
     return;
   }