diff --git a/CHANGES b/CHANGES
index dd34b724e..ec2d09fb3 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2,6 +2,7 @@ medusa alpha 2: (Future)
 Bugfixes:
  - DS Video: Fix VRAM mirroring in the renderer (fixes mgba.io/i/561)
  - DS Video: Fix extended modes 1.x screen base range (fixes mgba.io/i/568)
+ - DS GX: Fix T-repeat textures (fixes mgba.io/i/577)
 Misc:
  - DS: Set boot complete bit in RAM on boot (fixes mgba.io/i/576, mgba.io/i/580, mgba.io/i/586)
 
diff --git a/src/ds/gx/software.c b/src/ds/gx/software.c
index 0907aa5b7..a91c964f4 100644
--- a/src/ds/gx/software.c
+++ b/src/ds/gx/software.c
@@ -122,7 +122,7 @@ static color_t _lookupColor(struct DSGXSoftwareRenderer* renderer, struct DSGXSo
 		if (t < 0) {
 			t = 0;
 		} else if (t >= poly->texH) {
-			t = poly->texW - 1;
+			t = poly->texH - 1;
 		}
 	} else if (DSGXTexParamsIsTMirror(poly->texParams)) {
 		if (t & poly->texH) {