diff --git a/CHANGES b/CHANGES
index 004e8956a70..340af0f17cb 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,6 +1,9 @@
                                                      -*- coding: utf-8 -*-
 Changes for APR 1.3.4
 
+  *) Reset errno to zero in apr_strtoi64 to prevent returning an errno not
+     equal zero in cases where the operation worked fine. [Ruediger Pluem]
+
   *) Win32: Do not error out on apr_pollset_poll() when there are no sockets.
      [Justin Erenkrantz]
 
diff --git a/strings/apr_strings.c b/strings/apr_strings.c
index ec687913c53..d20004eadae 100644
--- a/strings/apr_strings.c
+++ b/strings/apr_strings.c
@@ -245,6 +245,7 @@ APR_DECLARE(apr_status_t) apr_strtoff(apr_off_t *offset, const char *nptr,
 APR_DECLARE(apr_int64_t) apr_strtoi64(const char *nptr, char **endptr, int base)
 {
 #ifdef APR_INT64_STRFN
+    errno = 0;
     return APR_INT64_STRFN(nptr, endptr, base);
 #else
     const char *s;
@@ -253,6 +254,7 @@ APR_DECLARE(apr_int64_t) apr_strtoi64(const char *nptr, char **endptr, int base)
     int neg, any;
     char c;
 
+    errno = 0;
     /*
      * Skip white space and pick up leading +/- sign if any.
      * If base is 0, allow 0x for hex and 0 for octal, else