1 files changed, 4 insertions, 4 deletions
diff --git a/src/drivers/framebuffer.cc b/src/drivers/framebuffer.cc
index b945e77..2fbe153 100644
--- a/src/drivers/framebuffer.cc
+++ b/src/drivers/framebuffer.cc
@@ -40,19 +40,19 @@ void putchar(char c){
 }
 
 void clear(){
-  for(char i=0;i<MAX_LINE;i++){
+  for(u8 i=0;i<MAX_LINE;i++){
     scrollup();
   }
 }
 
 void scrollup(){
   // Move VS.line up
-  for(char i=1;i<=MAX_LINE;i++){
-    for(char j=0;j<=MAX_COL;j++)
+  for(u8 i=1;i<=MAX_LINE;i++){
+    for(u8 j=0;j<=MAX_COL;j++)
       VS.mem[j*2+MAX_COL*(i-1)*2]=VS.mem[j*2+MAX_COL*i*2];
   }
   // Clear last VS.line
-  for(char i=0;i<=MAX_COL;i++){
+  for(u8 i=0;i<=MAX_COL;i++){
     VS.mem[i*2+MAX_COL*(MAX_LINE-1)*2]='\0';
   }
 }