diff --git a/src/libqof/qof/test/test-gnc-date.c b/src/libqof/qof/test/test-gnc-date.c
index b7b06fb7af..555fcbe4b7 100644
--- a/src/libqof/qof/test/test-gnc-date.c
+++ b/src/libqof/qof/test/test-gnc-date.c
@@ -231,7 +231,7 @@ test_timespec_diff (void)
     const gint sec_per_day = 24 * 3600;
     const gint sec_per_mo = 30 * sec_per_day;
     const gint64 sec_per_yr = 365 * sec_per_day;
-    const glong nsec1 = 439652, nsec2 = 132794892, nsec3 = 1132794892;
+    const gint64 nsec1 = 439652, nsec2 = 132794892, nsec3 = 1132794892;
     const gint64 secs1 = 23 * sec_per_yr + 5 * sec_per_mo + 11 * sec_per_day;
     const gint64 secs2 = 21 * sec_per_yr + 11 * sec_per_mo + 19 * sec_per_day;
     const gint64 secs3 = 72 * sec_per_yr + 2 * sec_per_mo + 26 * sec_per_day;