diff --git a/source/blender/gpu/GPU_matrix.h b/source/blender/gpu/GPU_matrix.h
index 1be75be1253..5af8e69a693 100644
--- a/source/blender/gpu/GPU_matrix.h
+++ b/source/blender/gpu/GPU_matrix.h
@@ -132,9 +132,6 @@ const float *gpuGetNormalMatrixInverse(float m[3][3]);
 #if SUPPORT_LEGACY_MATRIX
 /* copy top matrix from each legacy stack into new fresh stack */
 void gpuMatrixBegin3D_legacy(void);
-
-/* call after using glScale, glTranslate, etc. between draw calls */
-void gpuMatrixUpdate_legacy(void);
 #endif
 
 
diff --git a/source/blender/gpu/intern/gpu_matrix.c b/source/blender/gpu/intern/gpu_matrix.c
index 40e718594c5..1cdef0d40f3 100644
--- a/source/blender/gpu/intern/gpu_matrix.c
+++ b/source/blender/gpu/intern/gpu_matrix.c
@@ -809,11 +809,3 @@ bool gpuMatricesDirty(void)
 {
 	return state.dirty;
 }
-
-#if SUPPORT_LEGACY_MATRIX
-void gpuMatrixUpdate_legacy(void)
-{
-	BLI_assert(state.mode == MATRIX_MODE_INACTIVE);
-	state.dirty = true;
-}
-#endif