Index: src/OFDate.m
==================================================================
--- src/OFDate.m
+++ src/OFDate.m
@@ -428,11 +428,11 @@
 	return [element autorelease];
 }
 
 - (uint32_t)microsecond
 {
-	return (uint32_t)rint((_seconds - floor(_seconds)) * 1000000);
+	return (uint32_t)((_seconds - floor(_seconds)) * 1000000);
 }
 
 - (uint8_t)second
 {
 	GMTIME_RET(tm_sec)

Index: tests/OFDateTests.m
==================================================================
--- tests/OFDateTests.m
+++ tests/OFDateTests.m
@@ -32,11 +32,11 @@
 
 	TEST(@"+[dateWithTimeIntervalSince1970:]",
 	    (d1 = [OFDate dateWithTimeIntervalSince1970: 0]))
 
 	TEST(@"-[dateByAddingTimeInterval:]",
-	    (d2 = [d1 dateByAddingTimeInterval: 3600 * 25 + 5.000001]))
+	    (d2 = [d1 dateByAddingTimeInterval: 3600 * 25 + 5.000002]))
 
 	TEST(@"-[description]",
 	    [[d1 description] isEqual: @"1970-01-01T00:00:00Z"] &&
 	    [[d2 description] isEqual: @"1970-01-02T01:00:05Z"])
 
@@ -52,11 +52,11 @@
 	TEST(@"-[compare:]", [d1 compare: d2] == OF_ORDERED_ASCENDING)
 
 	TEST(@"-[second]", [d1 second] == 0 && [d2 second] == 5)
 
 	TEST(@"-[microsecond]",
-	    [d1 microsecond] == 0 && [d2 microsecond] == 1)
+	    [d1 microsecond] == 0 && [d2 microsecond] == 2)
 
 	TEST(@"-[minute]", [d1 minute] == 0 && [d2 minute] == 0)
 
 	TEST(@"-[hour]", [d1 hour] == 0 && [d2 hour] == 1)