diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index ff0a7c027..116fcbe7f 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -2807,7 +2807,7 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
     gcode += this->unretract();
 
     // adjust acceleration
-    {
+    if (m_config.default_acceleration.value > 0) {
         double acceleration;
         if (this->on_first_layer() && m_config.first_layer_acceleration.value > 0) {
             acceleration = m_config.first_layer_acceleration.value;