diff --git a/SPIRV/disassemble.cpp b/SPIRV/disassemble.cpp
index ebc17f2a1..35591b711 100644
--- a/SPIRV/disassemble.cpp
+++ b/SPIRV/disassemble.cpp
@@ -40,10 +40,10 @@
 // Disassembler for SPIR-V.
 //
 
-#include <unordered_map>
 #include <iomanip>
 #include <stack>
 #include <sstream>
+#include "stdlib.h"
 
 #include "GLSL450Lib.h"
 extern const char* GlslStd450DebugNames[GLSL_STD_450::Count];