diff --git a/xtldr/debug.cc b/xtldr/debug.cc
index 3a08229..34c4946 100644
--- a/xtldr/debug.cc
+++ b/xtldr/debug.cc
@@ -398,5 +398,5 @@ XTCDECL
 BOOLEAN
 Debug::SerialPortReady()
 {
-    return (BOOLEAN)(SerialPort.Flags & COMPORT_FLAG_INIT);
+    return (SerialPort.Flags & COMPORT_FLAG_INIT);
 }
diff --git a/xtoskrnl/ke/kubsan.cc b/xtoskrnl/ke/kubsan.cc
index f054784..3ba6626 100644
--- a/xtoskrnl/ke/kubsan.cc
+++ b/xtoskrnl/ke/kubsan.cc
@@ -24,7 +24,7 @@ BOOLEAN
 KE::KUbsan::CheckReport(PKUBSAN_SOURCE_LOCATION Location)
 {
     /* Make sure, this error should be reported */
-    return (BOOLEAN)!ActiveFrame;
+    return !ActiveFrame;
 }
 
 /**
diff --git a/xtoskrnl/mm/init.cc b/xtoskrnl/mm/init.cc
index 49ffc04..d7694d8 100644
--- a/xtoskrnl/mm/init.cc
+++ b/xtoskrnl/mm/init.cc
@@ -126,8 +126,8 @@ XTAPI
 BOOLEAN
 MM::Init::VerifyMemoryTypeFree(LOADER_MEMORY_TYPE MemoryType)
 {
-    return (BOOLEAN)((MemoryType == LoaderFree) || (MemoryType == LoaderFirmwareTemporary) ||
-                     (MemoryType == LoaderLoadedProgram) || (MemoryType == LoaderOsloaderStack));
+    return ((MemoryType == LoaderFree) || (MemoryType == LoaderFirmwareTemporary) ||
+            (MemoryType == LoaderLoadedProgram) || (MemoryType == LoaderOsloaderStack));
 }
 
 /**
@@ -144,7 +144,7 @@ XTAPI
 BOOLEAN
 MM::Init::VerifyMemoryTypeInvisible(LOADER_MEMORY_TYPE MemoryType)
 {
-    return (BOOLEAN)((MemoryType == LoaderFirmwarePermanent) ||
-                     (MemoryType == LoaderSpecialMemory) ||
-                     (MemoryType == LoaderBBTMemory));
+    return ((MemoryType == LoaderFirmwarePermanent) ||
+            (MemoryType == LoaderSpecialMemory) ||
+            (MemoryType == LoaderBBTMemory));
 }
diff --git a/xtoskrnl/rtl/bitmap.cc b/xtoskrnl/rtl/bitmap.cc
index e2f31c6..df9b80b 100644
--- a/xtoskrnl/rtl/bitmap.cc
+++ b/xtoskrnl/rtl/bitmap.cc
@@ -313,7 +313,7 @@ RTL::BitMap::FindBits(IN PRTL_BITMAP BitMap,
         while(BitOffset + Length < BitMapEnd)
         {
             /* Increment offset */
-            BitOffset += CountBits(BitMap, BitMap->Size - BitOffset, BitOffset, (BOOLEAN)!SetBits);
+            BitOffset += CountBits(BitMap, BitMap->Size - BitOffset, BitOffset, !SetBits);
             if(BitOffset + Length > BitMapEnd)
             {
                 /* No match found, break loop execution */
diff --git a/xtoskrnl/rtl/guid.cc b/xtoskrnl/rtl/guid.cc
index 3585f5f..7290721 100644
--- a/xtoskrnl/rtl/guid.cc
+++ b/xtoskrnl/rtl/guid.cc
@@ -34,6 +34,6 @@ RTL::Guid::CompareGuids(IN PGUID Guid1,
     Guid2Ptr = (PUINT)Guid2;
 
     /* Compare GUIDs */
-    return (BOOLEAN)(Guid1Ptr[0] == Guid2Ptr[0] && Guid1Ptr[1] == Guid2Ptr[1] &&
-                     Guid1Ptr[2] == Guid2Ptr[2] && Guid1Ptr[3] == Guid2Ptr[3]);
+    return (Guid1Ptr[0] == Guid2Ptr[0] && Guid1Ptr[1] == Guid2Ptr[1] &&
+            Guid1Ptr[2] == Guid2Ptr[2] && Guid1Ptr[3] == Guid2Ptr[3]);
 }
diff --git a/xtoskrnl/rtl/llist.cc b/xtoskrnl/rtl/llist.cc
index 2994cf6..58bff64 100644
--- a/xtoskrnl/rtl/llist.cc
+++ b/xtoskrnl/rtl/llist.cc
@@ -107,7 +107,7 @@ XTCDECL
 BOOLEAN
 RTL::LinkedList::ListEmpty(IN PLIST_ENTRY ListHead)
 {
-    return (BOOLEAN)(((ListHead->Flink == NULLPTR) && (ListHead->Blink == NULLPTR)) || (ListHead->Flink == ListHead));
+    return (((ListHead->Flink == NULLPTR) && (ListHead->Blink == NULLPTR)) || (ListHead->Flink == ListHead));
 }
 
 /**
diff --git a/xtoskrnl/rtl/math.cc b/xtoskrnl/rtl/math.cc
index f1fc35a..0c35e79 100644
--- a/xtoskrnl/rtl/math.cc
+++ b/xtoskrnl/rtl/math.cc
@@ -631,7 +631,7 @@ RTL::Math::InfiniteDouble(IN DOUBLE Value)
     Var.Double = &Value;
 
     /* Return TRUE if it is infinite, or FALSE otherwise */
-    return (BOOLEAN)((Var.DoubleS->Exponent & 0x7FF) == 0x7FF);
+    return ((Var.DoubleS->Exponent & 0x7FF) == 0x7FF);
 }
 
 /**
@@ -690,5 +690,5 @@ RTL::Math::NanDouble(IN DOUBLE Value)
     Var.Double = &Value;
 
     /* Return TRUE if it is NaN, or FALSE otherwise */
-    return (BOOLEAN)(Var.DoubleS->Exponent == 0x7FF && (Var.DoubleS->MantissaHigh != 0 || Var.DoubleS->MantissaLow != 0));
+    return (Var.DoubleS->Exponent == 0x7FF && (Var.DoubleS->MantissaHigh != 0 || Var.DoubleS->MantissaLow != 0));
 }