diff --git a/GPU/Directx9/StateMappingDX9.cpp b/GPU/Directx9/StateMappingDX9.cpp
index 32a5884411..98c9479c23 100644
--- a/GPU/Directx9/StateMappingDX9.cpp
+++ b/GPU/Directx9/StateMappingDX9.cpp
@@ -666,18 +666,22 @@ void TransformDrawEngineDX9::ApplyDrawState(int prim) {
 		dxstate.scissorTest.disable();
 	}
 
-	// Direct3D can't handle negative depth ranges, so we fix it in the projection matrix.
 	float depthMin = vpAndScissor.depthRangeMin;
 	float depthMax = vpAndScissor.depthRangeMax;
-	if (gstate_c.vpDepth != depthMax - depthMin) {
-		gstate_c.vpDepth = depthMax - depthMin;
-		vpAndScissor.dirtyProj = true;
+
+	if (!gstate.isModeThrough()) {
+		// Direct3D can't handle negative depth ranges, so we fix it in the projection matrix.
+		if (gstate_c.vpDepth != depthMax - depthMin) {
+			gstate_c.vpDepth = depthMax - depthMin;
+			vpAndScissor.dirtyProj = true;
+		}
+		if (depthMin > depthMax) {
+			std::swap(depthMin, depthMax);
+		}
+		if (depthMin < 0.0f) depthMin = 0.0f;
+		if (depthMax > 1.0f) depthMax = 1.0f;
 	}
-	if (depthMin > depthMax) {
-		std::swap(depthMin, depthMax);
-	}
-	if (depthMin < 0.0f) depthMin = 0.0f;
-	if (depthMax > 1.0f) depthMax = 1.0f;
+
 	dxstate.viewport.set(vpAndScissor.viewportX, vpAndScissor.viewportY, vpAndScissor.viewportW, vpAndScissor.viewportH, depthMin, depthMax);
 	if (vpAndScissor.dirtyProj) {
 		shaderManager_->DirtyUniform(DIRTY_PROJMATRIX);