diff --git a/GPU/Common/FramebufferCommon.h b/GPU/Common/FramebufferCommon.h
index b6febf7fa3..8e8ffc4f8c 100644
--- a/GPU/Common/FramebufferCommon.h
+++ b/GPU/Common/FramebufferCommon.h
@@ -387,8 +387,8 @@ protected:
 	bool gameUsesSequentialCopies_ = false;
 
 	// Sampled in BeginFrame for safety.
-	float renderWidth_;
-	float renderHeight_;
+	float renderWidth_ = 0.0f;
+	float renderHeight_ = 0.0f;
 	int pixelWidth_;
 	int pixelHeight_;
 	int bloomHack_ = 0;
diff --git a/GPU/GPUCommon.h b/GPU/GPUCommon.h
index afd0add47b..44bb9ab6d2 100644
--- a/GPU/GPUCommon.h
+++ b/GPU/GPUCommon.h
@@ -332,8 +332,8 @@ protected:
 	bool debugRecording_;
 	bool interruptsEnabled_;
 	bool resized_;
-	DrawType lastDraw_;
-	GEPrimitiveType lastPrim_;
+	DrawType lastDraw_ = DRAW_UNKNOWN;
+	GEPrimitiveType lastPrim_ = GE_PRIM_INVALID;
 
 	int vertexCost_ = 0;