diff --git a/shared/nm-utils/nm-shared-utils.c b/shared/nm-utils/nm-shared-utils.c
index 84a5b18e2f..38bb8181f3 100644
--- a/shared/nm-utils/nm-shared-utils.c
+++ b/shared/nm-utils/nm-shared-utils.c
@@ -27,6 +27,85 @@
 
 /*****************************************************************************/
 
+void
+nm_utils_strbuf_append_c (char **buf, gsize *len, char c)
+{
+	switch (*len) {
+	case 0:
+		return;
+	case 1:
+		(*buf)[0] = '\0';
+		*len = 0;
+		(*buf)++;
+		return;
+	default:
+		(*buf)[0] = c;
+		(*buf)[1] = '\0';
+		(*len)--;
+		(*buf)++;
+		return;
+	}
+}
+
+void
+nm_utils_strbuf_append_str (char **buf, gsize *len, const char *str)
+{
+	gsize src_len;
+
+	switch (*len) {
+	case 0:
+		return;
+	case 1:
+		if (!str || !*str) {
+			(*buf)[0] = '\0';
+			return;
+		}
+		(*buf)[0] = '\0';
+		*len = 0;
+		(*buf)++;
+		return;
+	default:
+		if (!str || !*str) {
+			(*buf)[0] = '\0';
+			return;
+		}
+		src_len = g_strlcpy (*buf, str, *len);
+		if (src_len >= *len) {
+			*buf = &(*buf)[*len];
+			*len = 0;
+		} else {
+			*buf = &(*buf)[src_len];
+			*len -= src_len;
+		}
+		return;
+	}
+}
+
+void
+nm_utils_strbuf_append (char **buf, gsize *len, const char *format, ...)
+{
+	char *p = *buf;
+	va_list args;
+	gint retval;
+
+	if (*len == 0)
+		return;
+
+	va_start (args, format);
+	retval = g_vsnprintf (p, *len, format, args);
+	va_end (args);
+
+	if (retval >= *len) {
+		*buf = &p[*len];
+		*len = 0;
+	} else {
+		*buf = &p[retval];
+		*len -= retval;
+	}
+}
+
+/*****************************************************************************/
+
 /* _nm_utils_ascii_str_to_int64:
  *
  * A wrapper for g_ascii_strtoll, that checks whether the whole string
diff --git a/shared/nm-utils/nm-shared-utils.h b/shared/nm-utils/nm-shared-utils.h
index f77fb0e353..5d8a3a86ab 100644
--- a/shared/nm-utils/nm-shared-utils.h
+++ b/shared/nm-utils/nm-shared-utils.h
@@ -24,6 +24,25 @@
 
 /*****************************************************************************/
 
+static inline void
+_nm_utils_strbuf_init (char *buf, gsize len, char **p_buf_ptr, gsize *p_buf_len)
+{
+	NM_SET_OUT (p_buf_len, len);
+	NM_SET_OUT (p_buf_ptr, buf);
+	buf[0] = '\0';
+}
+
+#define nm_utils_strbuf_init(buf, p_buf_ptr, p_buf_len) \
+	G_STMT_START { \
+		G_STATIC_ASSERT (G_N_ELEMENTS (buf) == sizeof (buf) && sizeof (buf) > sizeof (char *)); \
+		_nm_utils_strbuf_init ((buf), sizeof (buf), (p_buf_ptr), (p_buf_len)); \
+	} G_STMT_END
+void nm_utils_strbuf_append (char **buf, gsize *len, const char *format, ...) _nm_printf (3, 4);
+void nm_utils_strbuf_append_c (char **buf, gsize *len, char c);
+void nm_utils_strbuf_append_str (char **buf, gsize *len, const char *str);
+
+/*****************************************************************************/
+
 gint64 _nm_utils_ascii_str_to_int64 (const char *str, guint base, gint64 min, gint64 max, gint64 fallback);
 
 gint _nm_utils_ascii_str_to_bool (const char *str,
diff --git a/src/nm-core-utils.c b/src/nm-core-utils.c
index 70af933835..a1f01b3f81 100644
--- a/src/nm-core-utils.c
+++ b/src/nm-core-utils.c
@@ -1771,83 +1771,6 @@ nm_utils_to_string_buffer_init_null (gconstpointer obj, char **buf, gsize *len)
 	return TRUE;
 }
 
-void
-nm_utils_strbuf_append_c (char **buf, gsize *len, char c)
-{
-	switch (*len) {
-	case 0:
-		return;
-	case 1:
-		(*buf)[0] = '\0';
-		*len = 0;
-		(*buf)++;
-		return;
-	default:
-		(*buf)[0] = c;
-		(*buf)[1] = '\0';
-		(*len)--;
-		(*buf)++;
-		return;
-	}
-}
-
-void
-nm_utils_strbuf_append_str (char **buf, gsize *len, const char *str)
-{
-	gsize src_len;
-
-	switch (*len) {
-	case 0:
-		return;
-	case 1:
-		if (!str || !*str) {
-			(*buf)[0] = '\0';
-			return;
-		}
-		(*buf)[0] = '\0';
-		*len = 0;
-		(*buf)++;
-		return;
-	default:
-		if (!str || !*str) {
-			(*buf)[0] = '\0';
-			return;
-		}
-		src_len = g_strlcpy (*buf, str, *len);
-		if (src_len >= *len) {
-			*buf = &(*buf)[*len];
-			*len = 0;
-		} else {
-			*buf = &(*buf)[src_len];
-			*len -= src_len;
-		}
-		return;
-	}
-}
-
-void
-nm_utils_strbuf_append (char **buf, gsize *len, const char *format, ...)
-{
-	char *p = *buf;
-	va_list args;
-	gint retval;
-
-	if (*len == 0)
-		return;
-
-	va_start (args, format);
-	retval = g_vsnprintf (p, *len, format, args);
-	va_end (args);
-
-	if (retval >= *len) {
-		*buf = &p[*len];
-		*len = 0;
-	} else {
-		*buf = &p[retval];
-		*len -= retval;
-	}
-}
-
 const char *
 nm_utils_flags2str (const NMUtilsFlags2StrDesc *descs,
                     gsize n_descs,
diff --git a/src/nm-core-utils.h b/src/nm-core-utils.h
index f9d30b5ce4..66bcdc29e1 100644
--- a/src/nm-core-utils.h
+++ b/src/nm-core-utils.h
@@ -262,23 +262,6 @@ fcn_name (lookup_type val) \
 
 /*****************************************************************************/
 
-static inline void
-_nm_utils_strbuf_init (char *buf, gsize len, char **p_buf_ptr, gsize *p_buf_len)
-{
-	NM_SET_OUT (p_buf_len, len);
-	NM_SET_OUT (p_buf_ptr, buf);
-	buf[0] = '\0';
-}
-
-#define nm_utils_strbuf_init(buf, p_buf_ptr, p_buf_len) \
-	G_STMT_START { \
-		G_STATIC_ASSERT (G_N_ELEMENTS (buf) == sizeof (buf) && sizeof (buf) > sizeof (char *)); \
-		_nm_utils_strbuf_init ((buf), sizeof (buf), (p_buf_ptr), (p_buf_len)); \
-	} G_STMT_END
-void nm_utils_strbuf_append (char **buf, gsize *len, const char *format, ...) _nm_printf (3, 4);
-void nm_utils_strbuf_append_c (char **buf, gsize *len, char c);
-void nm_utils_strbuf_append_str (char **buf, gsize *len, const char *str);
-
 const char *nm_utils_get_ip_config_method (NMConnection *connection,
                                            GType         ip_setting_type);