diff --git a/libobs/graphics/matrix4.c b/libobs/graphics/matrix4.c
index 12d1ebd8cbaec3360e5d4faad45e414cd28e0225..a1831663805287d4334f39f4d4b9ac9bae71bab1 100644
--- a/libobs/graphics/matrix4.c
+++ b/libobs/graphics/matrix4.c
@@ -231,7 +231,7 @@ void matrix4_scale_i(struct matrix4 *dst, const struct vec3 *v,
 
 bool matrix4_inv(struct matrix4 *dst, const struct matrix4 *m)
 {
-	struct vec4 *dstv = (struct vec4 *)dst;
+	struct vec4 *dstv;
 	float det;
 	float m3x3[9];
 	int   i, j, sign;