diff --git a/reactos/tools/cabman/cabinet.h b/reactos/tools/cabman/cabinet.h
index 105fcfebba2..b55a6a4624d 100644
--- a/reactos/tools/cabman/cabinet.h
+++ b/reactos/tools/cabman/cabinet.h
@@ -95,7 +95,7 @@ extern ULONG DebugTraceLevel;
 
 #define CAB_SIGNATURE        0x4643534D // "MSCF"
 #define CAB_VERSION          0x0103
-#define CAB_BLOCKSIZE        32768
+#define CAB_BLOCKSIZE        2048
 
 #define CAB_COMP_MASK        0x00FF
 #define CAB_COMP_NONE        0x0000