diff --git a/libs/kimath/include/geometry/seg.h b/libs/kimath/include/geometry/seg.h
index 323b198546..a373ac76bb 100644
--- a/libs/kimath/include/geometry/seg.h
+++ b/libs/kimath/include/geometry/seg.h
@@ -33,7 +33,6 @@
 #include <type_traits>                  // for swap
 
 #include <core/optional.h>
-#include <math/util.h>                  // for rescale
 #include <math/vector2d.h>
 
 typedef OPT<VECTOR2I> OPT_VECTOR2I;
@@ -406,22 +405,6 @@ private:
     int m_index;
 };
 
-inline VECTOR2I SEG::LineProject( const VECTOR2I& aP ) const
-{
-    VECTOR2I d = B - A;
-    ecoord l_squared = d.Dot( d );
-
-    if( l_squared == 0 )
-        return A;
-
-    ecoord t = d.Dot( aP - A );
-
-    int xp = rescale( t, ecoord{ d.x }, l_squared );
-    int yp = rescale( t, ecoord{ d.y }, l_squared );
-
-    return A + VECTOR2I( xp, yp );
-}
-
 inline int SEG::LineDistance( const VECTOR2I& aP, bool aDetermineSide ) const
 {
     ecoord p = ecoord{ A.y } - B.y;
@@ -439,45 +422,6 @@ inline SEG::ecoord SEG::TCoef( const VECTOR2I& aP ) const
     return d.Dot( aP - A);
 }
 
-inline const VECTOR2I SEG::NearestPoint( const VECTOR2I& aP ) const
-{
-    VECTOR2I d = B - A;
-    ecoord l_squared = d.Dot( d );
-
-    if( l_squared == 0 )
-        return A;
-
-    ecoord t = d.Dot( aP - A );
-
-    if( t < 0 )
-        return A;
-    else if( t > l_squared )
-        return B;
-
-    int xp = rescale( t, (ecoord)d.x, l_squared );
-    int yp = rescale( t, (ecoord)d.y, l_squared );
-
-    return A + VECTOR2I( xp, yp );
-}
-
-inline const VECTOR2I SEG::ReflectPoint( const VECTOR2I& aP ) const
-{
-    VECTOR2I                d = B - A;
-    VECTOR2I::extended_type l_squared = d.Dot( d );
-    VECTOR2I::extended_type t = d.Dot( aP - A );
-    VECTOR2I                c;
-
-    if( !l_squared )
-        c = aP;
-    else
-    {
-        c.x = A.x + rescale( t, static_cast<VECTOR2I::extended_type>( d.x ), l_squared );
-        c.y = A.y + rescale( t, static_cast<VECTOR2I::extended_type>( d.y ), l_squared );
-    }
-
-    return 2 * c - aP;
-}
-
 inline std::ostream& operator<<( std::ostream& aStream, const SEG& aSeg )
 {
     aStream << "[ " << aSeg.A << " - " << aSeg.B << " ]";
diff --git a/libs/kimath/src/geometry/seg.cpp b/libs/kimath/src/geometry/seg.cpp
index f875b70fdc..5e369e20b6 100644
--- a/libs/kimath/src/geometry/seg.cpp
+++ b/libs/kimath/src/geometry/seg.cpp
@@ -222,3 +222,61 @@ bool SEG::Contains( const VECTOR2I& aP ) const
 {
     return Distance( aP ) <= 1;
 }
+
+
+const VECTOR2I SEG::NearestPoint( const VECTOR2I& aP ) const
+{
+    VECTOR2I d = B - A;
+    ecoord   l_squared = d.Dot( d );
+
+    if( l_squared == 0 )
+        return A;
+
+    ecoord t = d.Dot( aP - A );
+
+    if( t < 0 )
+        return A;
+    else if( t > l_squared )
+        return B;
+
+    int xp = rescale( t, (ecoord) d.x, l_squared );
+    int yp = rescale( t, (ecoord) d.y, l_squared );
+
+    return A + VECTOR2I( xp, yp );
+}
+
+
+const VECTOR2I SEG::ReflectPoint( const VECTOR2I& aP ) const
+{
+    VECTOR2I                d = B - A;
+    VECTOR2I::extended_type l_squared = d.Dot( d );
+    VECTOR2I::extended_type t = d.Dot( aP - A );
+    VECTOR2I                c;
+
+    if( !l_squared )
+        c = aP;
+    else
+    {
+        c.x = A.x + rescale( t, static_cast<VECTOR2I::extended_type>( d.x ), l_squared );
+        c.y = A.y + rescale( t, static_cast<VECTOR2I::extended_type>( d.y ), l_squared );
+    }
+
+    return 2 * c - aP;
+}
+
+
+VECTOR2I SEG::LineProject( const VECTOR2I& aP ) const
+{
+    VECTOR2I d = B - A;
+    ecoord   l_squared = d.Dot( d );
+
+    if( l_squared == 0 )
+        return A;
+
+    ecoord t = d.Dot( aP - A );
+
+    int xp = rescale( t, ecoord{ d.x }, l_squared );
+    int yp = rescale( t, ecoord{ d.y }, l_squared );
+
+    return A + VECTOR2I( xp, yp );
+}
\ No newline at end of file