diff --git a/module-xrdp-sink-symdef.h b/module-xrdp-sink-symdef.h
index 14443d3..7001ba5 100644
--- a/module-xrdp-sink-symdef.h
+++ b/module-xrdp-sink-symdef.h
@@ -1,5 +1,5 @@
-#ifndef foomodulexrdpsinksymdeffoo
-#define foomodulexrdpsinksymdeffoo
+#ifndef MODULE_XRDP_SINK_SYMDEF_H
+#define MODULE_XRDP_SINK_SYMDEF_H
 
 #include <pulsecore/core.h>
 #include <pulsecore/module.h>
diff --git a/module-xrdp-source-symdef.h b/module-xrdp-source-symdef.h
index e046764..41e364c 100644
--- a/module-xrdp-source-symdef.h
+++ b/module-xrdp-source-symdef.h
@@ -1,5 +1,5 @@
-#ifndef foomodulenullsourcesymdeffoo
-#define foomodulenullsourcesymdeffoo
+#ifndef MODULE_XRDP_SOURCE_SYMDEF_H
+#define MODULE_XRDP_SOURCE_SYMDEF_H
 
 #include <pulsecore/core.h>
 #include <pulsecore/module.h>