diff --git a/WHATS_NEW_DM b/WHATS_NEW_DM
index 4a2947aa8..46ce9b036 100644
--- a/WHATS_NEW_DM
+++ b/WHATS_NEW_DM
@@ -1,5 +1,6 @@
 Version 1.02.78 - 
 ===================================
+  Add DM_TO_STRING public macro.
   Always return success on dmeventd -V command call.
   Fix parsing of 64bit snapshot status in dmeventd snapshot plugin.
   Add dm_get_status_snapshot() for parsing snapshot status.
diff --git a/libdm/libdevmapper.h b/libdm/libdevmapper.h
index 1bf580762..dba854801 100644
--- a/libdm/libdevmapper.h
+++ b/libdm/libdevmapper.h
@@ -34,6 +34,10 @@
 # define __typeof__ typeof
 #endif
 
+/* Macros to make string defines */
+#define DM_TO_STRING_EXP(A) #A
+#define DM_TO_STRING(A) DM_TO_STRING_EXP(A)
+
 #ifdef __cplusplus
 extern "C" {
 #endif
diff --git a/libdm/libdm-common.c b/libdm/libdm-common.c
index 4b0ba08d2..d18de9ce2 100644
--- a/libdm/libdm-common.c
+++ b/libdm/libdm-common.c
@@ -1591,10 +1591,6 @@ static void _unmangle_mountinfo_string(const char *src, char *buf)
 	*buf = '\0';
 }
 
-/* Macros to make string defines */
-#define TO_STRING_EXP(A) #A
-#define TO_STRING(A) TO_STRING_EXP(A)
-
 /* Parse one line of mountinfo and unmangled target line */
 static int _mountinfo_parse_line(const char *line, unsigned *maj, unsigned *min, char *buf)
 {
@@ -1602,8 +1598,8 @@ static int _mountinfo_parse_line(const char *line, unsigned *maj, unsigned *min,
 	char target[PATH_MAX + 1];
 
 	/* TODO: maybe detect availability of  %ms  glib support ? */
-	if (sscanf(line, "%*u %*u %u:%u %" TO_STRING(PATH_MAX)
-		   "s %" TO_STRING(PATH_MAX) "s",
+	if (sscanf(line, "%*u %*u %u:%u %" DM_TO_STRING(PATH_MAX)
+		   "s %" DM_TO_STRING(PATH_MAX) "s",
 		   maj, min, root, target) < 4) {
 		log_error("Failed to parse mountinfo line.");
 		return 0;