diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index 6b60567dc..c89e3bebd 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -4310,6 +4310,11 @@ std::string FullPrintConfig::validate()
             break;
         }
         case coPercent:
+        {
+            auto* fopt = static_cast<const ConfigOptionPercent*>(opt);
+            out_of_range = fopt->get_abs_value(100) < optdef->min || fopt->get_abs_value(100) > optdef->max;
+            break;
+        }
         case coFloatOrPercent:
         {
             auto *fopt = static_cast<const ConfigOptionPercent*>(opt);