diff --git a/reactos/include/ddk/wdm.h b/reactos/include/ddk/wdm.h
index bedb38b41e2..18c1be79f02 100644
--- a/reactos/include/ddk/wdm.h
+++ b/reactos/include/ddk/wdm.h
@@ -1204,11 +1204,12 @@ typedef enum _KSPIN_LOCK_QUEUE_NUMBER {
 #endif /* defined(_AMD64_) */
 
 typedef VOID
-(NTAPI *PKDEFERRED_ROUTINE)(
+(NTAPI KDEFERRED_ROUTINE)(
   IN struct _KDPC *Dpc,
   IN PVOID DeferredContext OPTIONAL,
   IN PVOID SystemArgument1 OPTIONAL,
   IN PVOID SystemArgument2 OPTIONAL);
+typedef KDEFERRED_ROUTINE *PKDEFERRED_ROUTINE;
 
 typedef enum _KDPC_IMPORTANCE {
   LowImportance,
diff --git a/reactos/include/xdk/ketypes.h b/reactos/include/xdk/ketypes.h
index 86046749953..1d06cc87593 100644
--- a/reactos/include/xdk/ketypes.h
+++ b/reactos/include/xdk/ketypes.h
@@ -640,11 +640,12 @@ typedef enum _KSPIN_LOCK_QUEUE_NUMBER {
 #endif /* defined(_AMD64_) */
 
 typedef VOID
-(NTAPI *PKDEFERRED_ROUTINE)(
+(NTAPI KDEFERRED_ROUTINE)(
   IN struct _KDPC *Dpc,
   IN PVOID DeferredContext OPTIONAL,
   IN PVOID SystemArgument1 OPTIONAL,
   IN PVOID SystemArgument2 OPTIONAL);
+typedef KDEFERRED_ROUTINE *PKDEFERRED_ROUTINE;
 
 typedef enum _KDPC_IMPORTANCE {
   LowImportance,
@@ -1017,7 +1018,7 @@ typedef VOID
 
 typedef enum _TIMER_SET_INFORMATION_CLASS {
   TimerSetCoalescableTimer,
-  MaxTimerInfoClass 
+  MaxTimerInfoClass
 } TIMER_SET_INFORMATION_CLASS;
 
 #if (NTDDI_VERSION >= NTDDI_WIN7)
diff --git a/reactos/lib/sdk/crt/printf/streamout.c b/reactos/lib/sdk/crt/printf/streamout.c
index 66aae271dd5..798e298e4ba 100644
--- a/reactos/lib/sdk/crt/printf/streamout.c
+++ b/reactos/lib/sdk/crt/printf/streamout.c
@@ -73,7 +73,7 @@ enum
 #ifndef _USER32_WSPRINTF
 
 void
-#ifdef _LIBCNT
+#ifdef _LIBCNT_
 /* Due to restrictions in kernel mode regarding the use of floating point,
    we prevent it from being inlined */
 __declspec(noinline)