diff --git a/kernel/kls_ljpeg/ljpeg2ppm/ljpgtopnm.c b/kernel/kls_ljpeg/ljpeg2ppm/ljpgtopnm.c
index c38c214..854e72e 100644
--- a/kernel/kls_ljpeg/ljpeg2ppm/ljpgtopnm.c
+++ b/kernel/kls_ljpeg/ljpeg2ppm/ljpgtopnm.c
@@ -48,7 +48,7 @@
  * input and output file pointers 
  */
 FILE *inFile, *outFile;
-void FreeArray2D(char **);
+void FreeArray2D(MCU *);
 
 void WritePmHeader(DecompressInfo dcInfo);
 
diff --git a/kernel/kls_ljpeg/ljpeg2ppm/util.c b/kernel/kls_ljpeg/ljpeg2ppm/util.c
index 9474291..9d86ac8 100644
--- a/kernel/kls_ljpeg/ljpeg2ppm/util.c
+++ b/kernel/kls_ljpeg/ljpeg2ppm/util.c
@@ -44,7 +44,7 @@
 #include "mcu.h"
 #include "proto.h"
 
-void FreeArray2D(char **);
+void FreeArray2D(MCU *);
 void FixHuffTbl(HuffmanTable *);
 
 unsigned int bitMask[] = {  0xffffffff, 0x7fffffff, 0x3fffffff, 0x1fffffff,
@@ -293,7 +293,7 @@ FixHuffTbl (htbl)
  */
 void
 FreeArray2D(arrayPtr)
-    char **arrayPtr;
+    MCU *arrayPtr;
 {
     free(arrayPtr[0]);
     free(arrayPtr);