diff --git a/Fonderie/glitches.c b/Fonderie/glitches.c
index a99d18d9..15a3af6b 100644
--- a/Fonderie/glitches.c
+++ b/Fonderie/glitches.c
@@ -26,10 +26,10 @@ if (verbosity > 1) {
 
 offset = pvictime->width * line;
 
-for (xpos=offset; xpos<pvictime->width; xpos++) {
-	pvictime->R[offset] = fval;
-	pvictime->G[offset] = 0.0;
-	pvictime->B[offset] = fval;
+for (xpos=0; xpos<pvictime->width; xpos++) {
+	pvictime->R[offset+xpos] = fval;
+	pvictime->G[offset+xpos] = 0.0;
+	pvictime->B[offset+xpos] = fval;
 	}
 
 return 0;