diff --git a/legacy/ecore/src/lib/ecore/ecore_signal.c b/legacy/ecore/src/lib/ecore/ecore_signal.c
index ef86e7df30..c9ec440a44 100644
--- a/legacy/ecore/src/lib/ecore/ecore_signal.c
+++ b/legacy/ecore/src/lib/ecore/ecore_signal.c
@@ -9,6 +9,9 @@
 #include <unistd.h>
 #include <assert.h>
 
+/* make mono happy - this is evil though... */
+#undef SIGPWR
+
 typedef void (*Signal_Handler)(int sig, siginfo_t *si, void *foo);
 
 static void _ecore_signal_callback_set(int sig, Signal_Handler func);