diff --git a/hide/tools/FileWatcher.hx b/hide/tools/FileWatcher.hx
index 5e09cddbf..53caea175 100644
--- a/hide/tools/FileWatcher.hx
+++ b/hide/tools/FileWatcher.hx
@@ -57,7 +57,9 @@ class FileWatcher {
 	}
 
 	public function ignorePrevChange( f : FileWatchEvent ) {
-		f.ignoreCheck = getSignature(f.path);
+		if (f != null) {
+			f.ignoreCheck = getSignature(f.path);
+		}
 	}
 
 	function getSignature( path : String ) : String {
@@ -230,4 +232,4 @@ class FileWatcher {
 	}
 
 
-}
\ No newline at end of file
+}