Index: configure.ac
==================================================================
--- configure.ac
+++ configure.ac
@@ -475,24 +475,10 @@
 ])
 AC_CHECK_FUNC(localtime_r, [
 	AC_DEFINE(HAVE_LOCALTIME_R, 1, [Whether we have localtime_r])
 ])
 
-AC_MSG_CHECKING(for tm_gmtoff in struct tm)
-AC_TRY_COMPILE([
-	#define _GNU_SOURCE
-	#include <time.h>
-], [
-	struct tm tm;
-	tm.tm_gmtoff = 0;
-], [
-	AC_DEFINE(STRUCT_TM_HAS_TM_GMTOFF, 1, [Whether struct tm has tm_gmtoff])
-	AC_MSG_RESULT(yes)
-], [
-	AC_MSG_RESULT(no)
-])
-
 AC_CHECK_FUNC(kqueue, [
 	AC_DEFINE(HAVE_KQUEUE, 1, [Whether we have kqueue])
 	AC_SUBST(OFSTREAMOBSERVER_KQUEUE_M, "OFStreamObserver_kqueue.m")
 ])
 AC_CHECK_HEADER(poll.h, [

Index: src/OFDate.m
==================================================================
--- src/OFDate.m
+++ src/OFDate.m
@@ -248,16 +248,10 @@
 		if (of_strptime([string UTF8String], [format UTF8String],
 		    &tm) == NULL)
 			@throw [OFInvalidFormatException
 			    exceptionWithClass: isa];
 
-#ifdef STRUCT_TM_HAS_TM_GMTOFF
-		if (tm.tm_gmtoff != 0)
-			@throw [OFInvalidFormatException
-			    exceptionWithClass: isa];
-#endif
-
 		/* Years */
 		seconds = (int64_t)(tm.tm_year - 70) * 31536000;
 		/* Days of leap years, excluding the year to look at */
 		seconds += (((tm.tm_year + 1899) / 4) - 492) * 86400;
 		seconds -= (((tm.tm_year + 1899) / 100) - 19) * 86400;