diff --git a/dev-libs/nspr/files/nspr-4.6.1-prtime.patch b/dev-libs/nspr/files/nspr-4.6.1-prtime.patch
new file mode 100644
--- /dev/null
+++ b/dev-libs/nspr/files/nspr-4.6.1-prtime.patch
@@ -0,0 +1,26 @@
+--- mozilla/nsprpub/pr/src/misc/prtime.c-orig	2004-04-25 10:01:01.000000000 -0500
++++ mozilla/nsprpub/pr/src/misc/prtime.c	2006-02-23 12:07:35.098166000 -0600
+@@ -1509,7 +1509,7 @@
+                 case TT_EET: zone_offset =  2 * 60; break;
+                 case TT_JST: zone_offset =  9 * 60; break;
+                 default:
+-                  PR_ASSERT (0);
++                  return PR_FAILURE;
+                   break;
+                 }
+         }
+@@ -1551,11 +1551,12 @@
+           struct tm localTime;
+           time_t secs;
+ 
+-          PR_ASSERT(tm.tm_month > -1 
++          if (!(tm.tm_month > -1
+                                    && tm.tm_mday > 0 
+                                    && tm.tm_hour > -1
+                                    && tm.tm_min > -1
+-                                   && tm.tm_sec > -1);
++                                   && tm.tm_sec > -1)) 
++		return PR_FAILURE;
+ 
+             /*
+              * To obtain time_t from a tm structure representing the local