diff --git a/auto/src/glxew_tail.h b/auto/src/glxew_tail.h
index ed3be17..702eb94 100644
--- a/auto/src/glxew_tail.h
+++ b/auto/src/glxew_tail.h
@@ -9,12 +9,12 @@ extern GLboolean glxewContextIsSupported (GLXEWContext* ctx, const char* name);
 #define glxewInit() glxewContextInit(glxewGetContext())
 #define glxewIsSupported(x) glxewContextIsSupported(glxewGetContext(), x)
 
-#define GLXEW_GET_VAR(x) glxewGetContext()->x
+#define GLXEW_GET_VAR(x) (*(const GLboolean*)&(glxewGetContext()->x))
 #define GLXEW_GET_FUN(x) x
 
 #else /* GLEW_MX */
 
-#define GLXEW_GET_VAR(x) x
+#define GLXEW_GET_VAR(x) (*(const GLboolean*)&x)
 #define GLXEW_GET_FUN(x) x
 
 extern GLboolean glxewIsSupported (const char* name);
diff --git a/auto/src/wglew_tail.h b/auto/src/wglew_tail.h
index 2addbcf..7bb9bf8 100644
--- a/auto/src/wglew_tail.h
+++ b/auto/src/wglew_tail.h
@@ -9,12 +9,12 @@ GLEWAPI GLboolean wglewContextIsSupported (WGLEWContext* ctx, const char* name);
 #define wglewInit() wglewContextInit(wglewGetContext())
 #define wglewIsSupported(x) wglewContextIsSupported(wglewGetContext(), x)
 
-#define WGLEW_GET_VAR(x) wglewGetContext()->x
+#define WGLEW_GET_VAR(x) (*(const GLboolean*)&(wglewGetContext()->x))
 #define WGLEW_GET_FUN(x) wglewGetContext()->x
 
 #else /* GLEW_MX */
 
-#define WGLEW_GET_VAR(x) x
+#define WGLEW_GET_VAR(x) (*(const GLboolean*)&x)
 #define WGLEW_GET_FUN(x) x
 
 GLEWAPI GLboolean wglewIsSupported (const char* name);