diff --git a/main/ast_expr2f.c b/main/ast_expr2f.c
index 3693e4842153b8d1a5195c3087a32c77c1e5f329..eb4691dc4cca4a3377e9d17dbb71dc6e62a7b292 100644
--- a/main/ast_expr2f.c
+++ b/main/ast_expr2f.c
@@ -3134,11 +3134,11 @@ int ast_expr(char *expr, char *buf, int length)
 			res_length = snprintf(buf, length, "%ld", (long int) io.val->u.i);
 			return_value = (res_length <= length) ? res_length : length;
 		} else {
-#ifdef STANDALONE
+#if defined(STANDALONE) || defined(LOW_MEMORY)
 			strncpy(buf, io.val->u.s, length - 1);
-#else /* !STANDALONE */
+#else /* !STANDALONE && !LOW_MEMORY */
 			ast_copy_string(buf, io.val->u.s, length);
-#endif /* STANDALONE */
+#endif /* STANDALONE || LOW_MEMORY */
 			return_value = strlen(buf);
 			free(io.val->u.s);
 		}
diff --git a/pbx/ael/ael_lex.c b/pbx/ael/ael_lex.c
index e416f6afbdefda7f99eacf38e79597d708da7c72..7468a46bb6ffd529590ba3c6a2ca95224d7e79b3 100644
--- a/pbx/ael/ael_lex.c
+++ b/pbx/ael/ael_lex.c
@@ -1689,7 +1689,7 @@ YY_RULE_SETUP
 			if (*(p1+1) != '/')
 				snprintf(fnamebuf, sizeof(fnamebuf), "%s/%s", ast_config_AST_CONFIG_DIR, p1 + 1);
 			else
-#ifdef STANDALONE
+#if defined(STANDALONE) || defined(LOW_MEMORY)
 				strncpy(fnamebuf, p1 + 1, sizeof(fnamebuf) - 1);
 #else
 				ast_copy_string(fnamebuf, p1 + 1, sizeof(fnamebuf));