diff --git a/ChangeLog b/ChangeLog
index aa72d20f..e3536db2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2009-04-05  Nicolas François  <nicolas.francois@centraliens.net>
+
+	* src/useradd.c: Set errno to 0 before calling strtol.
+
 2009-04-05  Nicolas François  <nicolas.francois@centraliens.net>
 
 	* libmisc/isexpired.c: If there are no shadow entry, there is no
diff --git a/src/useradd.c b/src/useradd.c
index 8ae84249..e90108ed 100644
--- a/src/useradd.c
+++ b/src/useradd.c
@@ -286,6 +286,7 @@ static long get_number (const char *numstr)
 	long val;
 	char *endptr;
 
+	errno = 0;
 	val = strtol (numstr, &endptr, 10);
 	if (('\0' == *numstr) || ('\0' != *endptr) || (ERANGE == errno)) {
 		fprintf (stderr,