diff --git a/libdecor/src/os-compatibility.c b/libdecor/src/os-compatibility.c
index 8287da0e6..23766473d 100644
--- a/libdecor/src/os-compatibility.c
+++ b/libdecor/src/os-compatibility.c
@@ -148,7 +148,7 @@ os_resize_anonymous_file(int fd, off_t size)
  * XDG_RUNTIME_DIR.
  */
 int
-os_create_anonymous_file(off_t size)
+libdecor_os_create_anonymous_file(off_t size)
 {
 	static const char template[] = "/libdecor-shared-XXXXXX";
 	const char *path;
diff --git a/libdecor/src/os-compatibility.h b/libdecor/src/os-compatibility.h
index d0e69acd9..6ce49d01c 100644
--- a/libdecor/src/os-compatibility.h
+++ b/libdecor/src/os-compatibility.h
@@ -29,6 +29,6 @@
 #include <sys/types.h>
 
 int
-os_create_anonymous_file(off_t size);
+libdecor_os_create_anonymous_file(off_t size);
 
 #endif /* OS_COMPATIBILITY_H */
diff --git a/libdecor/src/plugins/cairo/libdecor-cairo.c b/libdecor/src/plugins/cairo/libdecor-cairo.c
index 765800df6..30f6f8720 100644
--- a/libdecor/src/plugins/cairo/libdecor-cairo.c
+++ b/libdecor/src/plugins/cairo/libdecor-cairo.c
@@ -597,7 +597,7 @@ create_shm_buffer(struct libdecor_plugin_cairo *plugin_cairo,
 	stride = buffer_width * 4;
 	size = stride * buffer_height;
 
-	fd = os_create_anonymous_file(size);
+	fd = libdecor_os_create_anonymous_file(size);
 	if (fd < 0) {
 		fprintf(stderr, "creating a buffer file for %d B failed: %s\n",
 			size, strerror(errno));
diff --git a/libdecor/src/plugins/gtk/libdecor-gtk.c b/libdecor/src/plugins/gtk/libdecor-gtk.c
index f768db6b5..ed4a84264 100644
--- a/libdecor/src/plugins/gtk/libdecor-gtk.c
+++ b/libdecor/src/plugins/gtk/libdecor-gtk.c
@@ -612,7 +612,7 @@ create_shm_buffer(struct libdecor_plugin_gtk *plugin_gtk,
 	stride = buffer_width * 4;
 	size = stride * buffer_height;
 
-	fd = os_create_anonymous_file(size);
+	fd = libdecor_os_create_anonymous_file(size);
 	if (fd < 0) {
 		fprintf(stderr, "creating a buffer file for %d B failed: %s\n",
 			size, strerror(errno));