diff --git a/src/Pipeline/SpirvBinary.cpp b/src/Pipeline/SpirvBinary.cpp
index 88ade4d..fa769ce 100644
--- a/src/Pipeline/SpirvBinary.cpp
+++ b/src/Pipeline/SpirvBinary.cpp
@@ -28,9 +28,11 @@
 {
 }
 
-void SpirvBinary::inheritIdentifier(const SpirvBinary &binary)
+void SpirvBinary::mapOptimizedIdentifier(const SpirvBinary &unoptimized)
 {
-	identifier = binary.identifier;
+	// The bitwise NOT accomplishes a 1-to-1 mapping of the identifiers,
+	// while avoiding clashes with previous or future serial IDs.
+	identifier = ~unoptimized.identifier;
 }
 
 }  // namespace sw
\ No newline at end of file
diff --git a/src/Pipeline/SpirvBinary.hpp b/src/Pipeline/SpirvBinary.hpp
index 9ff4536..50c9f97 100644
--- a/src/Pipeline/SpirvBinary.hpp
+++ b/src/Pipeline/SpirvBinary.hpp
@@ -29,7 +29,8 @@
 
 	inline uint32_t getIdentifier() const { return identifier; };
 
-	void inheritIdentifier(const SpirvBinary &binary);
+	// Assigns an identifier derived from the unoptimized SPIR-V binary, to avoid recompiles.
+	void mapOptimizedIdentifier(const SpirvBinary &unoptimized);
 
 private:
 	static std::atomic<uint32_t> serialCounter;
diff --git a/src/Vulkan/VkPipeline.cpp b/src/Vulkan/VkPipeline.cpp
index 9c06350..497e0e2 100644
--- a/src/Vulkan/VkPipeline.cpp
+++ b/src/Vulkan/VkPipeline.cpp
@@ -237,7 +237,7 @@
 			// so we should use a 1-to-1 mapping of the identifiers to avoid JIT routine recompiles.
 			if(!key.getSpecializationInfo())
 			{
-				spirv.inheritIdentifier(key.getBinary());
+				spirv.mapOptimizedIdentifier(key.getBinary());
 			}
 		}
 
@@ -297,7 +297,7 @@
 		// so we should use a 1-to-1 mapping of the identifiers to avoid JIT routine recompiles.
 		if(!shaderKey.getSpecializationInfo())
 		{
-			spirv.inheritIdentifier(shaderKey.getBinary());
+			spirv.mapOptimizedIdentifier(shaderKey.getBinary());
 		}
 	}