diff --git a/reactos/subsys/win32k/dib/dib16bpp.c b/reactos/subsys/win32k/dib/dib16bpp.c
index a084a657c94..b4e4acb08ad 100644
--- a/reactos/subsys/win32k/dib/dib16bpp.c
+++ b/reactos/subsys/win32k/dib/dib16bpp.c
@@ -425,7 +425,7 @@ DIB_16BPP_BitBlt(PBLTINFO BltInfo)
    return TRUE;
 }
 
-/* Optimze for bitBlt */
+/* Optimize for bitBlt */
 BOOLEAN
 DIB_16BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
 {
diff --git a/reactos/subsys/win32k/dib/dib1bpp.c b/reactos/subsys/win32k/dib/dib1bpp.c
index 026a9f1265c..5689e2a49a5 100644
--- a/reactos/subsys/win32k/dib/dib1bpp.c
+++ b/reactos/subsys/win32k/dib/dib1bpp.c
@@ -478,7 +478,7 @@ DIB_1BPP_BitBlt(PBLTINFO BltInfo)
    return TRUE;
 }
 
-/* Optimze for bitBlt */
+/* BitBlt Optimize */
 BOOLEAN 
 DIB_1BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
 {
diff --git a/reactos/subsys/win32k/dib/dib24bpp.c b/reactos/subsys/win32k/dib/dib24bpp.c
index da2a3ffa666..1a0fc9bbf18 100644
--- a/reactos/subsys/win32k/dib/dib24bpp.c
+++ b/reactos/subsys/win32k/dib/dib24bpp.c
@@ -302,7 +302,7 @@ DIB_24BPP_BitBlt(PBLTINFO BltInfo)
    return TRUE;
 }
 
-/* BitBlt Optimze */
+/* BitBlt Optimize */
 BOOLEAN 
 DIB_24BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
 {
diff --git a/reactos/subsys/win32k/dib/dib32bpp.c b/reactos/subsys/win32k/dib/dib32bpp.c
index aa3881a2de3..9c57a6eb68e 100644
--- a/reactos/subsys/win32k/dib/dib32bpp.c
+++ b/reactos/subsys/win32k/dib/dib32bpp.c
@@ -464,7 +464,8 @@ DIB_32BPP_BitBlt(PBLTINFO BltInfo)
    return TRUE;
 }
 
-/* optimze functions for bitblt */
+
+/* Optimize functions for bitblt */
 
 BOOLEAN
 FASTCALL
diff --git a/reactos/subsys/win32k/dib/dib4bpp.c b/reactos/subsys/win32k/dib/dib4bpp.c
index e9155923ae9..78ba1016190 100644
--- a/reactos/subsys/win32k/dib/dib4bpp.c
+++ b/reactos/subsys/win32k/dib/dib4bpp.c
@@ -356,7 +356,7 @@ DIB_4BPP_BitBlt(PBLTINFO BltInfo)
    return TRUE;
 }
 
-/* BitBlt Optimze */
+/* BitBlt Optimize */
 BOOLEAN 
 DIB_4BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
 {
diff --git a/reactos/subsys/win32k/dib/dib8bpp.c b/reactos/subsys/win32k/dib/dib8bpp.c
index 93e1e885262..5c72dad6f1d 100644
--- a/reactos/subsys/win32k/dib/dib8bpp.c
+++ b/reactos/subsys/win32k/dib/dib8bpp.c
@@ -345,7 +345,7 @@ DIB_8BPP_BitBlt(PBLTINFO BltInfo)
    return TRUE;
 }
 
-/* Optimze BitBlt */
+/* BitBlt Optimize */
 BOOLEAN 
 DIB_8BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
 {