diff --git a/configure b/configure
index 9f5eda7..718c13d 100755
--- a/configure
+++ b/configure
@@ -4,6 +4,7 @@
 # chronyd/chronyc - Programs for keeping computer clocks accurate.
 #
 # Copyright (C) Richard P. Curnow  1997-2003
+# Copyright (C) Miroslav Lichvar  2009
 #
 # =======================================================================
 
@@ -350,11 +351,11 @@ then
 fi
 
 if [ $feat_pps = "1" ] && \
-  test_code 'PPS API' 'timepps.h' '' '' '
+  test_code 'PPS API' 'string.h timepps.h' '' '' '
     pps_handle_t h;
     pps_info_t i;
     struct timespec ts;
-    return time_pps_fetch(&h, PPS_TSFMT_TSPEC, &i, &ts);'
+    return time_pps_fetch(h, PPS_TSFMT_TSPEC, &i, &ts);'
 then
   SYSDEFS="${SYSDEFS} -DHAVE_PPSAPI"
 fi