diff --git a/src/keys.cpp b/src/keys.cpp
index da1c9e0..09046ea 100644
--- a/src/keys.cpp
+++ b/src/keys.cpp
@@ -160,4 +160,5 @@ char OpenArena::KeyToASCII(Keys key, bool shift)
 			}
 		}
 	}
+	return '\0';
 }