diff --git a/Modules/signalmodule.c b/Modules/signalmodule.c
index e6d3f19..7ca697a 100644
--- a/Modules/signalmodule.c
+++ b/Modules/signalmodule.c
@@ -45,7 +45,11 @@
 #endif
 
 #ifndef NSIG
+#ifdef _SIGMAX
 #define NSIG (_SIGMAX + 1)	/* For QNX */
+#else
+#define NSIG (SIGMAX + 1)	/* for djgpp */
+#endif
 #endif