diff --git a/SpaceCadetPinball/GroupData.cpp b/SpaceCadetPinball/GroupData.cpp
index 54a3d7d..fbdf6b4 100644
--- a/SpaceCadetPinball/GroupData.cpp
+++ b/SpaceCadetPinball/GroupData.cpp
@@ -12,7 +12,6 @@
 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
 #	if defined(__GNUC__) && defined(linux)
 #		include <byteswap.h>
-#		define scp_bswap64(x) __bswap_64(x)
 #		define scp_bswap32(x) __bswap_32(x)
 #		define scp_bswap16(x) __bswap_16(x)
 #	endif //__GNUC__ && linux
diff --git a/SpaceCadetPinball/partman.cpp b/SpaceCadetPinball/partman.cpp
index 3348c92..d0a631e 100644
--- a/SpaceCadetPinball/partman.cpp
+++ b/SpaceCadetPinball/partman.cpp
@@ -8,7 +8,6 @@
 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
 #	if defined(__GNUC__) && defined(linux)
 #		include <byteswap.h>
-#		define scp_bswap64(x) __bswap_64(x)
 #		define scp_bswap32(x) __bswap_32(x)
 #		define scp_bswap16(x) __bswap_16(x)
 #	endif //__GNUC__ && linux