diff --git a/Core/Dialog/SavedataParam.cpp b/Core/Dialog/SavedataParam.cpp
index 3b358ff3fc..fdef16f594 100644
--- a/Core/Dialog/SavedataParam.cpp
+++ b/Core/Dialog/SavedataParam.cpp
@@ -765,7 +765,7 @@ void SavedataParam::SetFileInfo(int idx, PSPFileInfo &info, std::string saveName
 		u32 atlasPtr;
 		if (success)
 			atlasPtr = kernelMemory.Alloc(texSize, true, "SaveData Icon");
-		if (success && atlasPtr > 0)
+		if (success && atlasPtr != -1)
 		{
 			saveDataList[idx].textureData = atlasPtr;
 			Memory::Memcpy(atlasPtr, textureData, texSize);
diff --git a/Core/HLE/sceKernelThread.cpp b/Core/HLE/sceKernelThread.cpp
index c5b454a36f..6d8f426c30 100644
--- a/Core/HLE/sceKernelThread.cpp
+++ b/Core/HLE/sceKernelThread.cpp
@@ -355,7 +355,7 @@ public:
 		{
 			stackBlock = userMemory.Alloc(stackSize, true, (std::string("stack/") + nt.name).c_str());
 		}
-		if (stackBlock == (u32)-1 || stackBlock == 0)
+		if (stackBlock == (u32)-1)
 		{
 			stackBlock = 0;
 			ERROR_LOG(HLE, "Failed to allocate stack for thread");
diff --git a/Core/Util/BlockAllocator.cpp b/Core/Util/BlockAllocator.cpp
index c8e7cbbe3e..8158ff7966 100644
--- a/Core/Util/BlockAllocator.cpp
+++ b/Core/Util/BlockAllocator.cpp
@@ -32,7 +32,7 @@ u32 BlockAllocator::Alloc(u32 &size, bool fromTop, const char *tag)
 	// Sanity check
 	if (size == 0 || size > rangeSize_) {
 		ERROR_LOG(HLE, "Clearly bogus size: %08x - failing allocation", size);
-		return 0;
+		return -1;
 	}
 
 	// upalign size to grain
@@ -104,7 +104,7 @@ u32 BlockAllocator::AllocAt(u32 position, u32 size, const char *tag)
 	CheckBlocks();
 	if (size > rangeSize_) {
 		ERROR_LOG(HLE, "Clearly bogus size: %08x - failing allocation", size);
-		return 0;
+		return -1;
 	}
 
 	// upalign size to grain
diff --git a/Core/Util/PPGeDraw.cpp b/Core/Util/PPGeDraw.cpp
index b9ad159334..d18fda45f1 100644
--- a/Core/Util/PPGeDraw.cpp
+++ b/Core/Util/PPGeDraw.cpp
@@ -97,6 +97,14 @@ static void EndVertexDataAndDraw(int prim) {
 	WriteCmd(GE_CMD_PRIM, (prim << 16) | vertexCount);
 }
 
+static u32 __PPGeDoAlloc(u32 &size, bool fromTop, const char *name) {
+	u32 ptr = kernelMemory.Alloc(size, fromTop, name);
+	// Didn't get it.
+	if (ptr == -1)
+		return 0;
+	return ptr;
+}
+
 void __PPGeInit()
 {
 	if (PSP_CoreParameter().gpuCore == GPU_NULL) {
@@ -117,10 +125,10 @@ void __PPGeInit()
 	u32 atlasSize = height * width * 2;  // it's a 4444 texture
 	atlasWidth = width;
 	atlasHeight = height;
-	dlPtr = kernelMemory.Alloc(dlSize, false, "PPGe Display List");
-	dataPtr = kernelMemory.Alloc(dataSize, false, "PPGe Vertex Data");
-	atlasPtr = kernelMemory.Alloc(atlasSize, false, "PPGe Atlas Texture");
-	savedContextPtr = kernelMemory.Alloc(savedContextSize, false, "PPGe Saved Context");
+	dlPtr = __PPGeDoAlloc(dlSize, false, "PPGe Display List");
+	dataPtr = __PPGeDoAlloc(dataSize, false, "PPGe Vertex Data");
+	atlasPtr = __PPGeDoAlloc(atlasSize, false, "PPGe Atlas Texture");
+	savedContextPtr = __PPGeDoAlloc(savedContextSize, false, "PPGe Saved Context");
 
 	u16 *imagePtr = (u16 *)imageData;
 	// component order change