diff --git a/storage/innobase/row/row0sel.c b/storage/innobase/row/row0sel.c
index 38902bca905..eee74f280af 100644
--- a/storage/innobase/row/row0sel.c
+++ b/storage/innobase/row/row0sel.c
@@ -4545,12 +4545,12 @@ row_search_autoinc_read_column(
 
 	case DATA_FLOAT:
 		ut_a(len == sizeof(float));
-		value = mach_float_read(data);
+		value = (ib_ulonglong) mach_float_read(data);
 		break;
 
 	case DATA_DOUBLE:
 		ut_a(len == sizeof(double));
-		value = mach_double_read(data);
+		value = (ib_ulonglong) mach_double_read(data);
 		break;
 
 	default: