diff --git a/ke/Makefile b/ke/Makefile
index fe0b519..41f39d6 100644
--- a/ke/Makefile
+++ b/ke/Makefile
@@ -2,7 +2,7 @@ BIN :=		ke
 OBJS :=		main.o
 
 LDFLAGS :=
-CFLAGS :=	-pedantic -Wall -Werror -Wextra -O2 -std=c99 -g 
+CFLAGS :=	-pedantic -Wall -Werror -Wextra -O0 -std=c99 -g 
 
 .PHONY: all
 all: build 
diff --git a/ke/main.c b/ke/main.c
index eb11d03..44f759f 100644
--- a/ke/main.c
+++ b/ke/main.c
@@ -194,7 +194,7 @@ insert_row(int at, char *s, size_t len)
 	
 	if (at < editor.nrows) {
 		memmove(&editor.row[at+1], &editor.row[at],
-		    sizeof(erow) * (editor.rows - at));
+		    sizeof(erow) * (editor.rows - at + 1));
 	}
 	
 	editor.row[at].size = len;