diff --git a/routers/api/v1/repo/project.go b/routers/api/v1/repo/project.go
index 048992d6e8..464270c968 100644
--- a/routers/api/v1/repo/project.go
+++ b/routers/api/v1/repo/project.go
@@ -574,6 +574,10 @@ func EditProjectColumn(ctx *context.APIContext) {
 		column.Color = *form.Color
 	}
 	if form.Sorting != nil {
+		if *form.Sorting < -128 || *form.Sorting > 127 {
+			ctx.APIError(http.StatusBadRequest, "sorting value out of range, must be between -128 and 127")
+			return
+		}
 		column.Sorting = int8(*form.Sorting)
 	}