diff --git a/src/include/ngspice.h b/src/include/ngspice.h
index 4ef0aeadc..d91d30153 100644
--- a/src/include/ngspice.h
+++ b/src/include/ngspice.h
@@ -176,7 +176,7 @@
 /* NAN not available in MS VS 2008 */
 #ifndef NAN
     static const __int64 global_nan = 0x7ff8000000000000i64;
-    #define NAN (*(const double *) global_nan)
+    #define NAN (*(const double *) &global_nan)
 #endif
 #endif