diff --git a/src/libslic3r/Fill/Fill.cpp b/src/libslic3r/Fill/Fill.cpp
index ea7b24709d..e22109bede 100644
--- a/src/libslic3r/Fill/Fill.cpp
+++ b/src/libslic3r/Fill/Fill.cpp
@@ -487,7 +487,7 @@ std::vector<SurfaceFill> group_fills(const Layer &layer)
 		        params.bridge = is_bridge || Fill::use_bridge_flow(params.pattern);
 				params.flow   = params.bridge ?
 					//BBS: always enable thick bridge for internal bridge
-					layerm.bridging_flow(extrusion_role, (surface.is_bridge() && !surface.is_external()) || object_config.thick_bridges, params.extrusion_role == erInternalBridgeInfill) :
+					layerm.bridging_flow(extrusion_role, (surface.is_bridge() && !surface.is_external()) || object_config.thick_bridges) :
 					layerm.flow(extrusion_role, (surface.thickness == -1) ? layer.height : surface.thickness);
 
 				// Calculate flow spacing for infill pattern generation.
diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index b336210cd7..cf7b6d6016 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -4715,6 +4715,8 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
         _mm3_per_mm *= m_config.top_solid_infill_flow_ratio;
     else if (path.role() == erBottomSurface)
         _mm3_per_mm *= m_config.bottom_solid_infill_flow_ratio;
+    else if (path.role() == erInternalBridgeInfill)
+        _mm3_per_mm *= m_config.internal_bridge_flow;
 
 
     double e_per_mm = m_writer.extruder()->e_per_mm3() * _mm3_per_mm;
diff --git a/src/libslic3r/Layer.hpp b/src/libslic3r/Layer.hpp
index 6c66579d5a..52c48dfcd2 100644
--- a/src/libslic3r/Layer.hpp
+++ b/src/libslic3r/Layer.hpp
@@ -72,7 +72,7 @@ public:
 
     Flow    flow(FlowRole role) const;
     Flow    flow(FlowRole role, double layer_height) const;
-    Flow    bridging_flow(FlowRole role, bool thick_bridge = false, bool internal_bridge = false) const;
+    Flow    bridging_flow(FlowRole role, bool thick_bridge = false) const;
 
     void    slices_to_fill_surfaces_clipped();
     void    prepare_fill_surfaces();
diff --git a/src/libslic3r/LayerRegion.cpp b/src/libslic3r/LayerRegion.cpp
index a89dd3cfa7..69ac1824cc 100644
--- a/src/libslic3r/LayerRegion.cpp
+++ b/src/libslic3r/LayerRegion.cpp
@@ -32,16 +32,14 @@ Flow LayerRegion::flow(FlowRole role, double layer_height) const
     return m_region->flow(*m_layer->object(), role, layer_height, m_layer->id() == 0);
 }
 
-Flow LayerRegion::bridging_flow(FlowRole role, bool thick_bridge, bool internal_bridge) const
+Flow LayerRegion::bridging_flow(FlowRole role, bool thick_bridge) const
 {
     const PrintRegion       &region         = this->region();
     const PrintRegionConfig &region_config  = region.config();
     const PrintObject       &print_object   = *this->layer()->object();
     Flow bridge_flow;
     auto nozzle_diameter = float(print_object.print()->config().nozzle_diameter.get_at(region.extruder(role) - 1));
-    if(internal_bridge) { // internal bridge is using the thick bridge logic with the internal bridge flow ratio
-        bridge_flow = Flow::bridging_flow(float(sqrt(region_config.internal_bridge_flow)) * nozzle_diameter, nozzle_diameter);
-    } else if (thick_bridge) {
+    if (thick_bridge) {
         // The old Slic3r way (different from all other slicers): Use rounded extrusions.
         // Get the configured nozzle_diameter for the extruder associated to the flow role requested.
         // Here this->extruder(role) - 1 may underflow to MAX_INT, but then the get_at() will follback to zero'th element, so everything is all right.