diff --git a/imagickdraw_class.c b/imagickdraw_class.c
index 0d1f0f7d..fe26494d 100644
--- a/imagickdraw_class.c
+++ b/imagickdraw_class.c
@@ -3070,7 +3070,8 @@ PHP_METHOD(ImagickDraw, getDensity)
 		RETURN_NULL();
 	}
 	else {
-		IM_RETURN_STRING(density);
+		IM_RETVAL_STRING(density);
+		MagickRelinquishMemory(density);
 	}
 }
 /* }}} */
diff --git a/php_imagick_defs.h b/php_imagick_defs.h
index 2c5f990a..57abb4d2 100644
--- a/php_imagick_defs.h
+++ b/php_imagick_defs.h
@@ -322,11 +322,11 @@ static inline php_imagickkernel_object *php_imagickkernel_fetch_object(zend_obje
 // String access
 #if PHP_VERSION_ID >= 70000
 	#define IM_ZVAL_STRING(zv, charstar) ZVAL_STRING(zv, charstar);
-	#define IM_RETURN_STRING(s) RETURN_STRING(s)
+	#define IM_RETVAL_STRING(s) RETVAL_STRING(s)
 #else
 	#define IM_ZVAL_STRING(zv, charstar) ZVAL_STRING(zv, charstar, 1);
 	//RETURN_STRING(s, duplicate) 
-	#define IM_RETURN_STRING(s) RETURN_STRING(s, 0)
+	#define IM_RETVAL_STRING(s) RETVAL_STRING(s, 1)
 #endif
 
 #if PHP_VERSION_ID >= 70000