diff --git a/HandmadeMath.h b/HandmadeMath.h
index b0f4026..9275b8f 100644
--- a/HandmadeMath.h
+++ b/HandmadeMath.h
@@ -316,7 +316,7 @@ typedef union hmm_vec2
     float Elements[2];
 
 #ifdef __cplusplus
-    inline float &operator[](int &Index)
+    inline float &operator[](int Index)
     {
         return Elements[Index];
     }
@@ -367,7 +367,7 @@ typedef union hmm_vec3
     float Elements[3];
 
 #ifdef __cplusplus
-    inline float &operator[](int &Index)
+    inline float &operator[](int Index)
     {
         return Elements[Index];
     }
@@ -431,7 +431,7 @@ typedef union hmm_vec4
 #endif
 
 #ifdef __cplusplus
-    inline float &operator[](int &Index)
+    inline float &operator[](int Index)
     {
         return Elements[Index];
     }
@@ -447,7 +447,7 @@ typedef union hmm_mat4
 #endif
 
 #ifdef __cplusplus
-    inline hmm_vec4 operator[](const int &Index)
+    inline hmm_vec4 operator[](const int Index)
     {
         float* col = Elements[Index];