diff --git a/camlibs/jl2005c/jl2005bcd_decompress.c b/camlibs/jl2005c/jl2005bcd_decompress.c
index dff2d6264..63c55c4e9 100644
--- a/camlibs/jl2005c/jl2005bcd_decompress.c
+++ b/camlibs/jl2005c/jl2005bcd_decompress.c
@@ -85,7 +85,7 @@ jl2005bcd_decompress (unsigned char *output, unsigned char *input,
 	struct jpeg_error_mgr jcerr, jderr;
 	JOCTET *jpeg_header = NULL;
 	int outputsize = 0;
-	unsigned long jpeg_header_size = 0;
+	uint32_t jpeg_header_size = 0;
 	int i, x, y, x1, y1, jpeg_data_size, jpeg_data_idx, eoi, size, ret;
 	JSAMPLE green[8 * 16];
 	JSAMPLE red[8 * 8];
diff --git a/camlibs/ptp2/chdk.c b/camlibs/ptp2/chdk.c
index 2787a7261..bc966a299 100644
--- a/camlibs/ptp2/chdk.c
+++ b/camlibs/ptp2/chdk.c
@@ -1145,7 +1145,7 @@ static void yuv_live_to_jpeg(unsigned char *p_yuv,
 	struct		jpeg_error_mgr jerr;
 	JSAMPROW	row_ptr[1];
 	uint8_t		*outbuf = NULL, *tmprowbuf = NULL;
-	unsigned long	outlen = 0;
+	uint32_t	outlen = 0;
 	unsigned int	row_inc;
 	int		sshift, dshift, xshift, skip;