diff --git a/include/cglm/vec2.h b/include/cglm/vec2.h
index a6d1603..aaac759 100644
--- a/include/cglm/vec2.h
+++ b/include/cglm/vec2.h
@@ -744,7 +744,7 @@ glm_vec2_reflect(vec2 v, vec2 n, vec2 dest) {
  */
 CGLM_INLINE
 bool
-glm_vec2_refract(vec2 v, vec2 v, float eta, vec2 dest) {
+glm_vec2_refract(vec2 v, vec2 n, float eta, vec2 dest) {
   float ndi, eni, k;
 
   ndi = glm_vec2_dot(n, v);
diff --git a/include/cglm/vec4.h b/include/cglm/vec4.h
index a53746e..e24675f 100644
--- a/include/cglm/vec4.h
+++ b/include/cglm/vec4.h
@@ -1358,7 +1358,7 @@ glm_vec4_refract(vec4 v, vec4 n, float eta, vec4 dest) {
   }
 
   glm_vec4_scale(v, eta, dest);
-  glm_vec4_mulsubs(N, eni + sqrtf(k), dest);
+  glm_vec4_mulsubs(n, eni + sqrtf(k), dest);
   return true;
 }