Index: util-linux-2.12r/partx/gpt.h
===================================================================
--- util-linux-2.12r.orig/partx/gpt.h
+++ util-linux-2.12r/partx/gpt.h
@@ -36,7 +36,7 @@
 #define MSDOS_MBR_SIGNATURE 0xaa55
 #define GPT_BLOCK_SIZE 512
 
-#define GPT_HEADER_SIGNATURE 0x5452415020494645
+#define GPT_HEADER_SIGNATURE 0x5452415020494645LL
 #define GPT_HEADER_REVISION_V1_02 0x00010200
 #define GPT_HEADER_REVISION_V1_00 0x00010000
 #define GPT_HEADER_REVISION_V0_99 0x00009900