Index: src/OFDate.m
==================================================================
--- src/OFDate.m
+++ src/OFDate.m
@@ -373,11 +373,11 @@
 	return element;
 }
 
 - (uint32_t)microsecond
 {
-	return (uint32_t)nearbyint(remainder(seconds, 1) * 1000000);
+	return (uint32_t)fmod(seconds * 1000000, 1000000);
 }
 
 - (uint8_t)second
 {
 	GMTIME_RET(tm_sec)

Index: src/OFThread.m
==================================================================
--- src/OFThread.m
+++ src/OFThread.m
@@ -166,11 +166,11 @@
 #ifndef _WIN32
 	if (seconds > UINT_MAX)
 		@throw [OFOutOfRangeException newWithClass: self];
 
 	sleep((unsigned int)seconds);
-	usleep((uint32_t)nearbyint(remainder(seconds, 1) * 1000000));
+	usleep((useconds_t)fmod(seconds * 1000000, 1000000));
 #else
 	if (seconds * 1000 > UINT_MAX)
 		@throw [OFOutOfRangeException newWithClass: self];
 
 	Sleep((unsigned int)(seconds * 1000));
@@ -184,11 +184,11 @@
 #ifndef _WIN32
 	if (seconds > UINT_MAX)
 		@throw [OFOutOfRangeException newWithClass: self];
 
 	sleep((unsigned int)seconds);
-	usleep((uint32_t)nearbyint(remainder(seconds, 1) * 1000000));
+	usleep((useconds_t)fmod(seconds * 1000000, 1000000));
 #else
 	if (seconds * 1000 > UINT_MAX)
 		@throw [OFOutOfRangeException newWithClass: self];
 
 	Sleep((unsigned int)(seconds * 1000));