--- src/sshguard_logsuck.c
+++ src/sshguard_logsuck.c
@@ -58,6 +58,9 @@
 #   define STDIN_FILENO     0
 #endif
 
+#ifndef PATH_MAX
+#   include <sys/syslimits.h>
+#endif
 
 /* factor of growth of the interval between polls while in idle */
 #define     LOGPOLL_INTERVAL_GROWTHFACTOR     0.03