diff --git a/NXDNGateway/APRSWriter.h b/NXDNGateway/APRSWriter.h
index df51adc..f29d9a5 100644
--- a/NXDNGateway/APRSWriter.h
+++ b/NXDNGateway/APRSWriter.h
@@ -33,7 +33,9 @@
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <errno.h>
+#if defined(USE_GPSD)
 #include <gps.h>
+#endif
 #else
 #include <winsock.h>
 #endif