diff --git a/glslang/CMakeLists.txt b/glslang/CMakeLists.txt
index 6985706d..47925d8d 100644
--- a/glslang/CMakeLists.txt
+++ b/glslang/CMakeLists.txt
@@ -263,7 +263,6 @@ if(GLSLANG_ENABLE_INSTALL)
         Include/glslang_c_interface.h
         Include/glslang_c_shader_types.h
         Include/ResourceLimits.h
-        MachineIndependent/iomapper.h
         Include/visibility.h
         MachineIndependent/Versions.h)