diff --git a/src/ini.c b/src/ini.c
index 12d0493..2edf437 100644
--- a/src/ini.c
+++ b/src/ini.c
@@ -68,8 +68,10 @@ static int _write_ini_file(FILE* file, const ini_datum* schema,
 
         if (ini_string == schema->type) {
             const char* str = *(char**)ptr;
-            if (!needs_quotes(str)) fputs(str, file);
-            else fprintf(file, "\"%s\"", str);
+            if (NULL != str) {
+                if (!needs_quotes(str)) fputs(str, file);
+                else fprintf(file, "\"%s\"", str);
+            }
 
         } else if (ini_integer == schema->type) {
             fprintf(file, "%d", *(uint32_t*)ptr);