diff --git a/code/renderergl1/tr_light.c b/code/renderergl1/tr_light.c
index fc6af6a9..0d0a5da4 100644
--- a/code/renderergl1/tr_light.c
+++ b/code/renderergl1/tr_light.c
@@ -151,7 +151,7 @@ static void R_SetupEntityLightingGrid( trRefEntity_t *ent ) {
 		frac[i] = v - pos[i];
 		if ( pos[i] < 0 ) {
 			pos[i] = 0;
-		} else if ( pos[i] >= tr.world->lightGridBounds[i] - 1 ) {
+		} else if ( pos[i] > tr.world->lightGridBounds[i] - 1 ) {
 			pos[i] = tr.world->lightGridBounds[i] - 1;
 		}
 	}
diff --git a/code/renderergl2/tr_light.c b/code/renderergl2/tr_light.c
index e95fecd0..faaa8dd3 100644
--- a/code/renderergl2/tr_light.c
+++ b/code/renderergl2/tr_light.c
@@ -156,7 +156,7 @@ static void R_SetupEntityLightingGrid( trRefEntity_t *ent, world_t *world ) {
 		frac[i] = v - pos[i];
 		if ( pos[i] < 0 ) {
 			pos[i] = 0;
-		} else if ( pos[i] >= world->lightGridBounds[i] - 1 ) {
+		} else if ( pos[i] > world->lightGridBounds[i] - 1 ) {
 			pos[i] = world->lightGridBounds[i] - 1;
 		}
 	}
@@ -189,7 +189,7 @@ static void R_SetupEntityLightingGrid( trRefEntity_t *ent, world_t *world ) {
 		ignore = qfalse;
 		for ( j = 0 ; j < 3 ; j++ ) {
 			if ( i & (1<<j) ) {
-				if ((pos[j] + 1) >= world->lightGridBounds[j] - 1)
+				if ((pos[j] + 1) > world->lightGridBounds[j] - 1)
 				{
 					ignore = qtrue; // ignore values outside lightgrid
 				}