diff --git a/src/printf.c b/src/printf.c
index 87d0c16..57b5883 100644
--- a/src/printf.c
+++ b/src/printf.c
@@ -192,7 +192,10 @@ void kernaux_printf_va(
             break;
         }
 
-        if (formatter.type == TYPE_s) {
+        if (formatter.type == TYPE_PERCENT) {
+            putchar('%');
+        }
+        else if (formatter.type == TYPE_s) {
             const char *const arg = va_arg(va, char*);
 
             for (const char *arg_ptr = arg; *arg_ptr; ++arg_ptr) {
diff --git a/tests/test_printf.c b/tests/test_printf.c
index 746e12f..5e8b0af 100644
--- a/tests/test_printf.c
+++ b/tests/test_printf.c
@@ -42,6 +42,7 @@ int main()
     test("Hello, World!", "Hello, World!");
     test("Hello, Alex!", "Hello, %s!", "Alex");
     test("Hello, Alex!", "Hello, %c%c%c%c!", 'A', 'l', 'e', 'x');
+    test("%", "%%");
 
     return 0;
 }