diff --git a/camlibs/pentax/library.c b/camlibs/pentax/library.c
index fdd1550b6..80bcee4d9 100644
--- a/camlibs/pentax/library.c
+++ b/camlibs/pentax/library.c
@@ -185,6 +185,29 @@ save_buffer(pslr_handle_t camhandle, int bufno, CameraFile *file, pslr_status *s
 		bytes = pslr_buffer_read(camhandle, buf, sizeof(buf));
 		if (bytes == 0)
 			break;
+		// PEF file got from K100D Super have broken header, WTF?
+		if (current == 0 && status->image_format == PSLR_IMAGE_FORMAT_RAW &&
+				status->raw_format == PSLR_RAW_FORMAT_PEF) {
+			const unsigned char correct_header[92] =
+			{
+				0x4d, 0x4d, 0x00, 0x2a, 0x00, 0x00, 0x00, 0x08,
+				0x00, 0x13, 0x01, 0x00, 0x00, 0x04, 0x00, 0x00,
+				0x00, 0x01, 0x00, 0x00, 0x0b, 0xe0, 0x01, 0x01,
+				0x00, 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00,
+				0x07, 0xe8, 0x01, 0x02, 0x00, 0x03, 0x00, 0x00,
+				0x00, 0x01, 0x00, 0x0c, 0x00, 0x00, 0x01, 0x03,
+				0x00, 0x03, 0x00, 0x00, 0x00, 0x01, 0x80, 0x05,
+				0x00, 0x00, 0x01, 0x06, 0x00, 0x03, 0x00, 0x00,
+				0x00, 0x01, 0x80, 0x23, 0x00, 0x00, 0x01, 0x0f,
+				0x00, 0x02, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00,
+				0x00, 0xf2, 0x01, 0x10, 0x00, 0x02, 0x00, 0x00,
+				0x00, 0x14, 0x00, 0x00
+			};
+
+			if (bytes < sizeof(correct_header))
+				return GP_ERROR;
+			memcpy(buf, correct_header, sizeof(correct_header));
+		}
 		gp_file_append (file, (char*)buf, bytes);
 		current += bytes;
 	}