diff --git a/src/iomux_signal.c b/src/iomux_signal.c
index ccaee4f..3fe4161 100644
--- a/src/iomux_signal.c
+++ b/src/iomux_signal.c
@@ -274,6 +274,6 @@ int iomux_unregister_unixsignal(struct IOMux *mux, int signo)
 
     uc_signal_unlock();
 
-    return 0;
+    return rc;
 }