diff --git a/dll/ntdll/ldr/ldrinit.c b/dll/ntdll/ldr/ldrinit.c
index b41166c06ad..ed9774fc0c2 100644
--- a/dll/ntdll/ldr/ldrinit.c
+++ b/dll/ntdll/ldr/ldrinit.c
@@ -86,7 +86,7 @@ ULONG LdrpActiveUnloadCount;
 //extern LIST_ENTRY RtlCriticalSectionList;
 
 VOID NTAPI RtlpInitializeVectoredExceptionHandling(VOID);
-VOID NTAPI RtlpInitDeferedCriticalSection(VOID);
+VOID NTAPI RtlpInitDeferredCriticalSection(VOID);
 VOID NTAPI RtlInitializeHeapManager(VOID);
 
 ULONG RtlpDisableHeapLookaside; // TODO: Move to heap.c
@@ -1943,7 +1943,7 @@ LdrpInitializeProcess(IN PCONTEXT Context,
     }
 
     /* Initialize Critical Section Data */
-    RtlpInitDeferedCriticalSection();
+    RtlpInitDeferredCriticalSection();
 
     /* Initialize VEH Call lists */
     RtlpInitializeVectoredExceptionHandling();
diff --git a/sdk/lib/rtl/critical.c b/sdk/lib/rtl/critical.c
index 0d2ca9913ad..6ff4737697a 100644
--- a/sdk/lib/rtl/critical.c
+++ b/sdk/lib/rtl/critical.c
@@ -251,7 +251,7 @@ RtlpUnWaitCriticalSection(PRTL_CRITICAL_SECTION CriticalSection)
 }
 
 /*++
- * RtlpInitDeferedCriticalSection
+ * RtlpInitDeferredCriticalSection
  *
  *     Initializes the Critical Section implementation.
  *
@@ -267,7 +267,7 @@ RtlpUnWaitCriticalSection(PRTL_CRITICAL_SECTION CriticalSection)
  *--*/
 VOID
 NTAPI
-RtlpInitDeferedCriticalSection(VOID)
+RtlpInitDeferredCriticalSection(VOID)
 {
     /* Initialize the CS Protecting the List */
     RtlInitializeCriticalSection(&RtlCriticalSectionLock);