diff --git a/src/configurations.rs b/src/configurations.rs
index 88632e2..20d0397 100644
--- a/src/configurations.rs
+++ b/src/configurations.rs
@@ -41,8 +41,8 @@ pub const MODE_40X25_CONFIGURATION: VgaConfiguration = VgaConfiguration {
         (CrtcControllerIndex::Overflow, 0x1F),
         (CrtcControllerIndex::PresetRowScan, 0x00),
         (CrtcControllerIndex::MaximumScanLine, 0x4F),
-        (CrtcControllerIndex::TextCursorStart, 0x0A),
-        (CrtcControllerIndex::TextCursorEnd, 0x20),
+        (CrtcControllerIndex::TextCursorStart, 0x0D),
+        (CrtcControllerIndex::TextCursorEnd, 0x0E),
         (CrtcControllerIndex::StartAddressHigh, 0x00),
         (CrtcControllerIndex::StartAddressLow, 0x00),
         (CrtcControllerIndex::TextCursorLocationHigh, 0x00),
@@ -115,8 +115,8 @@ pub const MODE_40X50_CONFIGURATION: VgaConfiguration = VgaConfiguration {
         (CrtcControllerIndex::Overflow, 0x1F),
         (CrtcControllerIndex::PresetRowScan, 0x00),
         (CrtcControllerIndex::MaximumScanLine, 0x47),
-        (CrtcControllerIndex::TextCursorStart, 0x0A),
-        (CrtcControllerIndex::TextCursorEnd, 0x20),
+        (CrtcControllerIndex::TextCursorStart, 0x06),
+        (CrtcControllerIndex::TextCursorEnd, 0x07),
         (CrtcControllerIndex::StartAddressHigh, 0x00),
         (CrtcControllerIndex::StartAddressLow, 0x00),
         (CrtcControllerIndex::TextCursorLocationHigh, 0x04),