diff --git a/src/feature/video-logger.c b/src/feature/video-logger.c
index e25b1a44c..b0e3f470b 100644
--- a/src/feature/video-logger.c
+++ b/src/feature/video-logger.c
@@ -182,7 +182,7 @@ void mVideoLoggerRendererWriteVideoRegister(struct mVideoLogger* logger, uint32_
 }
 
 void mVideoLoggerRendererWriteVRAM(struct mVideoLogger* logger, uint32_t address) {
-	int bit = 1 << (address >> 12);
+	int bit = 1U << (address >> 12);
 	if (logger->vramDirtyBitmap[address >> 17] & bit) {
 		return;
 	}
diff --git a/src/gba/renderers/video-software.c b/src/gba/renderers/video-software.c
index 035f10d6b..de0a2279b 100644
--- a/src/gba/renderers/video-software.c
+++ b/src/gba/renderers/video-software.c
@@ -13,8 +13,8 @@
 #include <mgba-util/arm-algo.h>
 #include <mgba-util/memory.h>
 
-#define DIRTY_SCANLINE(R, Y) R->scanlineDirty[Y >> 5] |= (1 << (Y & 0x1F))
-#define CLEAN_SCANLINE(R, Y) R->scanlineDirty[Y >> 5] &= ~(1 << (Y & 0x1F))
+#define DIRTY_SCANLINE(R, Y) R->scanlineDirty[Y >> 5] |= (1U << (Y & 0x1F))
+#define CLEAN_SCANLINE(R, Y) R->scanlineDirty[Y >> 5] &= ~(1U << (Y & 0x1F))
 
 static void GBAVideoSoftwareRendererInit(struct GBAVideoRenderer* renderer);
 static void GBAVideoSoftwareRendererDeinit(struct GBAVideoRenderer* renderer);
@@ -519,7 +519,7 @@ static void GBAVideoSoftwareRendererDrawScanline(struct GBAVideoRenderer* render
 		softwareRenderer->nextY = y + 1;
 	}
 
-	bool dirty = softwareRenderer->scanlineDirty[y >> 5] & (1 << (y & 0x1F));
+	bool dirty = softwareRenderer->scanlineDirty[y >> 5] & (1U << (y & 0x1F));
 	if (memcmp(softwareRenderer->nextIo, softwareRenderer->cache[y].io, sizeof(softwareRenderer->nextIo))) {
 		memcpy(softwareRenderer->cache[y].io, softwareRenderer->nextIo, sizeof(softwareRenderer->nextIo));
 		dirty = true;