diff --git a/third_party/CMakeLists.txt b/third_party/CMakeLists.txt
index d44f62a..16bad95 100644
--- a/third_party/CMakeLists.txt
+++ b/third_party/CMakeLists.txt
@@ -87,7 +87,11 @@ if (NOT TARGET glslang)
       # Glslang tests are off by default. Turn them on if testing Shaderc.
       set(GLSLANG_TESTS ON)
     endif()
-    set(GLSLANG_ENABLE_INSTALL $<NOT:${SKIP_GLSLANG_INSTALL}>)
+    if (${SKIP_GLSLANG_INSTALL})
+      set(GLSLANG_ENABLE_INSTALL OFF)
+    else()
+      set(GLSLANG_ENABLE_INSTALL ON)
+    endif()
     add_subdirectory(${SHADERC_GLSLANG_DIR} glslang)
   endif()
   if (NOT TARGET glslang)
diff --git a/utils/git-sync-deps b/utils/git-sync-deps
index eecfbe9..73df6e5 100755
--- a/utils/git-sync-deps
+++ b/utils/git-sync-deps
@@ -279,4 +279,4 @@ def main(argv):
 
 
 if __name__ == '__main__':
-  exit(main(sys.argv[1:]))
+  sys.exit(main(sys.argv[1:]))