diff --git a/backend.c b/backend.c
index 6e5f44e..edb03dc 100644
--- a/backend.c
+++ b/backend.c
@@ -124,8 +124,8 @@ char* parse_cmd(const char *cmd, file *f){
 
 	if (offset) {
 		pos[1]= ' ';
-		memcpy(pos + 1, offset+1, strlen(offset+1));
-		pos[strlen(offset+1)] = '\0';
+		memcpy(pos + 1, offset+1, strlen(offset)+1);
+		pos[strlen(offset)+1] = '\0';
 	} else {
 		pos[1] = '\0';
 	}