diff --git a/lib/rfspace/rfspace_source_c.cc b/lib/rfspace/rfspace_source_c.cc
index 41190e5..dfd0f15 100644
--- a/lib/rfspace/rfspace_source_c.cc
+++ b/lib/rfspace/rfspace_source_c.cc
@@ -42,6 +42,7 @@
 #include <termios.h>
 #include <sys/stat.h>
 #include <dirent.h>
+#include <libgen.h> /* basename */
 
 #include <algorithm>
 #include <iostream>