diff --git a/src/frontend/terminal.c b/src/frontend/terminal.c
index 846d4172f..8f5a95225 100644
--- a/src/frontend/terminal.c
+++ b/src/frontend/terminal.c
@@ -26,7 +26,7 @@ $Id$
 #ifdef HAVE_LIBIBERTY_H /* asprintf */
 #include <libiberty.h>
 #undef AND /* obsolete macro in ansidecl.h */
-#else /* we have asprintf, but not libiberty.h */
+#elif defined(__MINGW32__)/* we have asprintf, but not libiberty.h */
 #include <stdarg.h>
 extern int asprintf(char **out, const char *fmt, ...);
 extern int vasprintf(char **out, const char *fmt, va_list ap);
diff --git a/src/main.c b/src/main.c
index f8889e00d..9b2d3a700 100644
--- a/src/main.c
+++ b/src/main.c
@@ -17,7 +17,7 @@
 #ifdef HAVE_LIBIBERTY_H /* asprintf */
 #include <libiberty.h>
 #undef AND /* obsolete macro in ansidecl.h */
-#else /* we have asprintf, but not libiberty.h */
+#elif defined(__MINGW32__)/* we have asprintf, but not libiberty.h */
 #include <stdarg.h>
 extern int asprintf(char **out, const char *fmt, ...);
 extern int vasprintf(char **out, const char *fmt, va_list ap);
diff --git a/src/misc/ivars.c b/src/misc/ivars.c
index 39e7000eb..cb2745432 100644
--- a/src/misc/ivars.c
+++ b/src/misc/ivars.c
@@ -9,7 +9,7 @@ Copyright 1991 Regents of the University of California.  All rights reserved.
 #ifdef HAVE_LIBIBERTY_H /* asprintf */
 #include <libiberty.h>
 #undef AND /* obsolete macro in ansidecl.h */
-#else /* we have asprintf, but not libiberty.h */
+#elif defined(__MINGW32__)/* we have asprintf, but not libiberty.h */
 #include <stdarg.h>
 extern int asprintf(char **out, const char *fmt, ...);
 extern int vasprintf(char **out, const char *fmt, va_list ap);
diff --git a/src/spicelib/parser/ifnewuid.c b/src/spicelib/parser/ifnewuid.c
index a04c0370f..023d27b3d 100644
--- a/src/spicelib/parser/ifnewuid.c
+++ b/src/spicelib/parser/ifnewuid.c
@@ -9,7 +9,7 @@ Author: 1988 Thomas L. Quarles
 #ifdef HAVE_LIBIBERTY_H /* asprintf */
 #include <libiberty.h>
 #undef AND /* obsolete macro in ansidecl.h */
-#else /* we have asprintf, but not libiberty.h */
+#elif defined(__MINGW32__)/* we have asprintf, but not libiberty.h */
 #include <stdarg.h>
 extern int asprintf(char **out, const char *fmt, ...);
 extern int vasprintf(char **out, const char *fmt, va_list ap);
diff --git a/src/spicelib/parser/inperror.c b/src/spicelib/parser/inperror.c
index 82cc2e8b1..8c3401eaf 100644
--- a/src/spicelib/parser/inperror.c
+++ b/src/spicelib/parser/inperror.c
@@ -13,7 +13,7 @@ Author: 1985 Thomas L. Quarles
 #ifdef HAVE_LIBIBERTY_H /* asprintf */
 #include <libiberty.h>
 #undef AND /* obsolete macro in ansidecl.h */
-#else /* we have asprintf, but not libiberty.h */
+#elif defined(__MINGW32__)/* we have asprintf, but not libiberty.h */
 #include <stdarg.h>
 extern int asprintf(char **out, const char *fmt, ...);
 extern int vasprintf(char **out, const char *fmt, va_list ap);