diff --git a/src/boot/z_std_dma.c b/src/boot/z_std_dma.c
index 7710ed1799..6a648ed5ce 100644
--- a/src/boot/z_std_dma.c
+++ b/src/boot/z_std_dma.c
@@ -1861,7 +1861,7 @@ void DmaMgr_ThreadEntry(void* arg0) {
 s32 DmaMgr_SendRequestImpl(DmaRequest* req, u32 ram, u32 vrom, u32 size, u32 unk, OSMesgQueue* queue, OSMesg msg) {
     static s32 sDmaMgrQueueFullLogged = 0;
 
-    if ((1 && (ram == 0)) || (osMemSize < ram + size + 0x80000000) || (vrom & 1) || (vrom > 0x4000000U) ||
+    if ((1 && (ram == 0)) || (osMemSize < ram + size + 0x80000000) || (vrom & 1) || (vrom > 0x4000000) ||
         (size == 0) || (size & 1)) {
         DmaMgr_Error(req, NULL, "ILLIGAL DMA-FUNCTION CALL", "パラメータ異常です");
     }
diff --git a/src/code/audio_playback.c b/src/code/audio_playback.c
index 57568d37ab..bc4eea75a2 100644
--- a/src/code/audio_playback.c
+++ b/src/code/audio_playback.c
@@ -169,7 +169,7 @@ void Audio_ProcessNotes(void) {
         noteSubEu2 = &gAudioContext.noteSubsEu[gAudioContext.noteSubEuOffset + i];
         playbackState = &note->playbackState;
         if (playbackState->parentLayer != NO_LAYER) {
-            if ((u32)playbackState->parentLayer < 0x7FFFFFFFU) {
+            if ((u32)playbackState->parentLayer < 0x7FFFFFFF) {
                 continue;
             }
 
@@ -349,7 +349,7 @@ Drum* Audio_GetDrum(s32 bankId, s32 drumId) {
         gAudioContext.audioErrorFlags = ((bankId << 8) + drumId) + 0x4000000;
         return NULL;
     }
-    if ((u32)gAudioContext.ctlEntries[bankId].drums < 0x80000000U) {
+    if ((u32)gAudioContext.ctlEntries[bankId].drums < 0x80000000) {
         return NULL;
     }
     drum = gAudioContext.ctlEntries[bankId].drums[drumId];
@@ -378,7 +378,7 @@ AudioBankSound* Audio_GetSfx(s32 bankId, s32 sfxId) {
         return NULL;
     }
 
-    if ((u32)gAudioContext.ctlEntries[bankId].soundEffects < 0x80000000U) {
+    if ((u32)gAudioContext.ctlEntries[bankId].soundEffects < 0x80000000) {
         return NULL;
     }
 
diff --git a/src/code/code_800C3C20.c b/src/code/code_800C3C20.c
index 65402c3e2c..72596fbf22 100644
--- a/src/code/code_800C3C20.c
+++ b/src/code/code_800C3C20.c
@@ -7,7 +7,7 @@ u8 D_8012D200[] = {
 void func_800C3C20(void) {
     s32 i;
 
-    for (i = 0; (i < ARRAY_COUNT(D_8012D200)) & 0xFFFFFFFFu; i++) {
+    for (i = 0; (i < ARRAY_COUNT(D_8012D200)) & 0xFFFFFFFF; i++) {
         func_800F87A0(D_8012D200[i]);
     }
 }
diff --git a/src/code/main.c b/src/code/main.c
index 94858bfde9..7afc300816 100644
--- a/src/code/main.c
+++ b/src/code/main.c
@@ -56,7 +56,7 @@ void Main(void* arg) {
     // "System heap initalization"
     osSyncPrintf("システムヒープ初期化 %08x-%08x %08x\n", sysHeap, fb, gSystemHeapSize);
     SystemHeap_Init(sysHeap, gSystemHeapSize); // initializes the system heap
-    if (osMemSize >= 0x800000U) {
+    if (osMemSize >= 0x800000) {
         debugHeap = SysCfb_GetFbEnd();
         debugHeapSize = (s32)(0x80600000 - debugHeap);
     } else {
diff --git a/src/code/sys_cfb.c b/src/code/sys_cfb.c
index b90da9c6d9..3c65b7aec3 100644
--- a/src/code/sys_cfb.c
+++ b/src/code/sys_cfb.c
@@ -7,7 +7,7 @@ void SysCfb_Init(s32 n64dd) {
     u32 screenSize;
     u32 tmpFbEnd;
 
-    if (osMemSize >= 0x800000U) {
+    if (osMemSize >= 0x800000) {
         // "8MB or more memory is installed"
         osSyncPrintf("８Ｍバイト以上のメモリが搭載されています\n");
         tmpFbEnd = 0x8044BE80;
@@ -19,7 +19,7 @@ void SysCfb_Init(s32 n64dd) {
             osSyncPrintf("このバージョンのマージンは %dK バイトです\n", (0x4BC00 / 1024));
             sSysCfbEnd = tmpFbEnd;
         }
-    } else if (osMemSize >= 0x400000U) {
+    } else if (osMemSize >= 0x400000) {
         osSyncPrintf("RAM4M mode\n");
         sSysCfbEnd = 0x80400000;
     } else {
diff --git a/src/code/z_play.c b/src/code/z_play.c
index 6d45532ae4..7933d67f7e 100644
--- a/src/code/z_play.c
+++ b/src/code/z_play.c
@@ -244,7 +244,7 @@ void Gameplay_Init(GameState* thisx) {
         gSaveContext.cutsceneIndex = 0;
     }
 
-    if (gSaveContext.nextDayTime != 0xFFFFU) {
+    if (gSaveContext.nextDayTime != 0xFFFF) {
         gSaveContext.dayTime = gSaveContext.nextDayTime;
         gSaveContext.skyboxTime = gSaveContext.nextDayTime;
     }
diff --git a/src/code/z_sram.c b/src/code/z_sram.c
index 356ffee17e..44287017b2 100644
--- a/src/code/z_sram.c
+++ b/src/code/z_sram.c
@@ -461,7 +461,7 @@ void Sram_WriteSave(SramContext* sramCtx) {
     j = 0;
 
     for (offset = 0; offset < CHECKSUM_SIZE; offset++) {
-        if (++j == 0x20U) {
+        if (++j == 0x20) {
             j = 0;
         }
         checksum += *ptr++;
@@ -473,7 +473,7 @@ void Sram_WriteSave(SramContext* sramCtx) {
     checksum = 0;
 
     for (offset = 0; offset < CHECKSUM_SIZE; offset++) {
-        if (++j == 0x20U) {
+        if (++j == 0x20) {
             j = 0;
         }
         checksum += *ptr++;
@@ -486,7 +486,7 @@ void Sram_WriteSave(SramContext* sramCtx) {
     checksum = 0;
 
     for (offset = 0; offset < CHECKSUM_SIZE; offset++) {
-        if (++j == 0x20U) {
+        if (++j == 0x20) {
             j = 0;
         }
         checksum += *ptr++;
@@ -715,7 +715,7 @@ void Sram_InitSave(FileChooseContext* fileChooseCtx, SramContext* sramCtx) {
     for (offset = 0; offset < CHECKSUM_SIZE; offset++) {
         osSyncPrintf("%x ", *ptr);
         checksum += *ptr++;
-        if (++j == 0x20u) {
+        if (++j == 0x20) {
             osSyncPrintf("\n");
             j = 0;
         }