diff --git a/lib/Slic3r/Print/Region.pm b/lib/Slic3r/Print/Region.pm
index 8a233049..5f591d88 100644
--- a/lib/Slic3r/Print/Region.pm
+++ b/lib/Slic3r/Print/Region.pm
@@ -56,7 +56,7 @@ sub flow {
         role                => $role,
         nozzle_diameter     => $nozzle_diameter,
         layer_height        => $layer_height,
-        bridge_flow_ratio   => ($bridge ? $self->print->config->bridge_flow_ratio : 0),
+        bridge_flow_ratio   => ($bridge ? $self->config->bridge_flow_ratio : 0),
     );
 }
 
diff --git a/xs/src/Print.cpp b/xs/src/Print.cpp
index 950377db..f7a34a98 100644
--- a/xs/src/Print.cpp
+++ b/xs/src/Print.cpp
@@ -249,6 +249,9 @@ PrintObject::invalidate_state_by_config_options(const std::vector<t_config_optio
             || *opt_key == "perimeter_extruder") {
             steps.insert(posPerimeters);
             steps.insert(posSupportMaterial);
+        } else if (*opt_key == "bridge_flow_ratio") {
+            steps.insert(posPerimeters);
+            steps.insert(posInfill);
         } else {
             // for legacy, if we can't handle this option let's signal the caller to invalidate all steps
             return false;
diff --git a/xs/src/PrintConfig.cpp b/xs/src/PrintConfig.cpp
index 20f3c754..78238080 100644
--- a/xs/src/PrintConfig.cpp
+++ b/xs/src/PrintConfig.cpp
@@ -48,6 +48,7 @@ PrintConfigDef::build_def() {
 
     Options["bridge_flow_ratio"].type = coFloat;
     Options["bridge_flow_ratio"].label = "Bridge flow ratio";
+    Options["bridge_flow_ratio"].category = "Advanced";
     Options["bridge_flow_ratio"].tooltip = "This factor affects the amount of plastic for bridging. You can decrease it slightly to pull the extrudates and prevent sagging, although default settings are usually good and you should experiment with cooling (use a fan) before tweaking this.";
     Options["bridge_flow_ratio"].cli = "bridge-flow-ratio=f";
 
diff --git a/xs/src/PrintConfig.hpp b/xs/src/PrintConfig.hpp
index 930bc7fa..77a3cb8d 100644
--- a/xs/src/PrintConfig.hpp
+++ b/xs/src/PrintConfig.hpp
@@ -195,6 +195,7 @@ class PrintRegionConfig : public virtual StaticPrintConfig
 {
     public:
     ConfigOptionInt                 bottom_solid_layers;
+    ConfigOptionFloat               bridge_flow_ratio;
     ConfigOptionFloat               bridge_speed;
     ConfigOptionFloatOrPercent      external_perimeter_extrusion_width;
     ConfigOptionFloatOrPercent      external_perimeter_speed;
@@ -225,6 +226,7 @@ class PrintRegionConfig : public virtual StaticPrintConfig
     
     PrintRegionConfig() : StaticPrintConfig() {
         this->bottom_solid_layers.value                          = 3;
+        this->bridge_flow_ratio.value                            = 1;
         this->bridge_speed.value                                 = 60;
         this->external_perimeter_extrusion_width.value           = 0;
         this->external_perimeter_extrusion_width.percent         = false;
@@ -265,6 +267,7 @@ class PrintRegionConfig : public virtual StaticPrintConfig
     
     ConfigOption* option(const t_config_option_key opt_key, bool create = false) {
         if (opt_key == "bottom_solid_layers")                        return &this->bottom_solid_layers;
+        if (opt_key == "bridge_flow_ratio")                          return &this->bridge_flow_ratio;
         if (opt_key == "bridge_speed")                               return &this->bridge_speed;
         if (opt_key == "external_perimeter_extrusion_width")         return &this->external_perimeter_extrusion_width;
         if (opt_key == "external_perimeter_speed")                   return &this->external_perimeter_speed;
@@ -305,7 +308,6 @@ class PrintConfig : public virtual StaticPrintConfig
     ConfigOptionInt                 bed_temperature;
     ConfigOptionFloat               bridge_acceleration;
     ConfigOptionInt                 bridge_fan_speed;
-    ConfigOptionFloat               bridge_flow_ratio;
     ConfigOptionFloat               brim_width;
     ConfigOptionBool                complete_objects;
     ConfigOptionBool                cooling;
@@ -378,7 +380,6 @@ class PrintConfig : public virtual StaticPrintConfig
         this->bed_temperature.value                              = 0;
         this->bridge_acceleration.value                          = 0;
         this->bridge_fan_speed.value                             = 100;
-        this->bridge_flow_ratio.value                            = 1;
         this->brim_width.value                                   = 0;
         this->complete_objects.value                             = false;
         this->cooling.value                                      = true;
@@ -468,7 +469,6 @@ class PrintConfig : public virtual StaticPrintConfig
         if (opt_key == "bed_temperature")                            return &this->bed_temperature;
         if (opt_key == "bridge_acceleration")                        return &this->bridge_acceleration;
         if (opt_key == "bridge_fan_speed")                           return &this->bridge_fan_speed;
-        if (opt_key == "bridge_flow_ratio")                          return &this->bridge_flow_ratio;
         if (opt_key == "brim_width")                                 return &this->brim_width;
         if (opt_key == "complete_objects")                           return &this->complete_objects;
         if (opt_key == "cooling")                                    return &this->cooling;