diff --git a/src/instructions/movb.c b/src/instructions/movb.c
index 6f0d47a..d882e62 100644
--- a/src/instructions/movb.c
+++ b/src/instructions/movb.c
@@ -84,7 +84,7 @@ void instruction_movb_r0_disp_r(cpu_status_t* status){
 }
 
 void instruction_movb_r0_disp_gbr(cpu_status_t* status){
-    int d = LO_NIBBLE(cpu_read8(status,status->pc+1));
+    int d = cpu_read8(status,status->pc+1);
     unsigned int disp = (0x000000FF & d);
     cpu_write8(status, status->gbr + disp, status->r[0]);
     status->pc += 2;