diff --git a/Core/display.c b/Core/display.c
index aa6e681..30f5f63 100755
--- a/Core/display.c
+++ b/Core/display.c
@@ -299,11 +299,11 @@ static void update_display_state(GB_gameboy_t *gb, uint8_t cycles)
     for (; cycles; cycles -= atomic_increase) {
         
         gb->display_cycles += atomic_increase;
-        /* The very first line is 2 (4 from the CPU's perseptive) clocks shorter when the LCD turns on.
-           Todo: Verify on the 3 CGB modes, especially double speed mode. */
-        if (gb->first_scanline && gb->display_cycles >= LINE_LENGTH - atomic_increase) {
+        /* The very first line is 4 clocks shorter when the LCD turns on. Verified on SGB2, CGB in CGB mode and
+         CGB in double speed mode. */
+        if (gb->first_scanline && gb->display_cycles >= LINE_LENGTH - 4) {
             gb->first_scanline = false;
-            gb->display_cycles += atomic_increase;
+            gb->display_cycles += 4;
         }
         bool should_compare_ly = true;
         uint8_t ly_for_comparison = gb->io_registers[GB_IO_LY] = gb->display_cycles / LINE_LENGTH;
diff --git a/Core/memory.c b/Core/memory.c
index 8d34917..d8f7df7 100644
--- a/Core/memory.c
+++ b/Core/memory.c
@@ -454,8 +454,6 @@ static void write_high_memory(GB_gameboy_t *gb, uint16_t addr, uint8_t value)
 
             case GB_IO_LCDC:
                 if ((value & 0x80) && !(gb->io_registers[GB_IO_LCDC] & 0x80)) {
-                    /* It appears that there's a slight delay after enabling the screen? */
-                    /* Todo: verify this. */
                     gb->display_cycles = 0;
                     gb->first_scanline = true;
                     if (gb->frame_skip_state == GB_FRAMESKIP_SECOND_FRAME_RENDERED) {