diff --git a/spine-glfw/src/spine-glfw.cpp b/spine-glfw/src/spine-glfw.cpp
index 97130b933..de8ca1031 100644
--- a/spine-glfw/src/spine-glfw.cpp
+++ b/spine-glfw/src/spine-glfw.cpp
@@ -200,7 +200,7 @@ void texture_dispose(texture_t texture) {
 }
 
 void matrix_ortho_projection(float *matrix, float width, float height) {
-    std::memset(matrix, 0, 16 * sizeof(float));
+    memset(matrix, 0, 16 * sizeof(float));
 
     float left = 0.0f;
     float right = width;