diff --git a/src/libslic3r/GCode/ConflictChecker.cpp b/src/libslic3r/GCode/ConflictChecker.cpp
index 5d2dfcdd3..acf6b71f0 100644
--- a/src/libslic3r/GCode/ConflictChecker.cpp
+++ b/src/libslic3r/GCode/ConflictChecker.cpp
@@ -107,11 +107,6 @@ void LinesBucketQueue::emplace_back_bucket(ExtrusionLayers &&els, const void *ob
     }
 }
 
-void LinesBucketQueue::reserve(size_t count)
-{
-    line_buckets.reserve(count);
-}
-
 // remove lowest and get the current bottom z
 float LinesBucketQueue::getCurrBottomZ()
 {
diff --git a/src/libslic3r/GCode/ConflictChecker.hpp b/src/libslic3r/GCode/ConflictChecker.hpp
index 4937a209f..eac10aac4 100644
--- a/src/libslic3r/GCode/ConflictChecker.hpp
+++ b/src/libslic3r/GCode/ConflictChecker.hpp
@@ -114,7 +114,6 @@ public:
 
 public:
     void        emplace_back_bucket(ExtrusionLayers &&els, const void *objPtr, Point offset);
-    void        reserve(size_t count);
     bool        valid() const { return line_bucket_ptr_queue.empty() == false; }
     float       getCurrBottomZ();
     LineWithIDs getCurLines() const;