diff --git a/configure b/configure
index 13fc5049..96b6b90a 100755
--- a/configure
+++ b/configure
@@ -206,7 +206,6 @@ fi
 
 case "$OS" in
 linux)
-	echo "CPPFLAGS += 	-D_XOPEN_SOURCE=700" >>$CONFIG_MK
 	echo "CPPFLAGS += 	-D_FILE_OFFSET_BITS=64" >> $CONFIG_MK
 	;;
 *)
diff --git a/include/xbps.h.in b/include/xbps.h.in
index b2def2e6..a0091d48 100644
--- a/include/xbps.h.in
+++ b/include/xbps.h.in
@@ -27,7 +27,7 @@
 #ifndef _XBPS_API_H_
 #define _XBPS_API_H_
 
-#define _XOPEN_SOURCE	600	/* required by PATH_MAX et al */
+#define _XOPEN_SOURCE	700	/* required by PATH_MAX et al */
 
 #include <stdio.h>
 #include <inttypes.h>