diff --git a/common/main/segment.h b/common/main/segment.h
index af0ea8801..098f7b00c 100644
--- a/common/main/segment.h
+++ b/common/main/segment.h
@@ -229,9 +229,6 @@ extern void delete_segment_from_group(int segment_num, int group_num);
 // Add segment to group
 extern void add_segment_to_group(int segment_num, int group_num);
 
-// Verify that all vertices are legal.
-extern void med_check_all_vertices();
-
 #if defined(DXX_BUILD_DESCENT_II)
 /*
  * reads a segment2 structure from a PHYSFS_file
diff --git a/similar/editor/segment.cpp b/similar/editor/segment.cpp
index 3869d0f98..de6b8f96c 100644
--- a/similar/editor/segment.cpp
+++ b/similar/editor/segment.cpp
@@ -1855,20 +1855,3 @@ int med_find_closest_threshold_segment_side(segment *sp, int side, segment **adj
 	else
 		return 0;
 }
-
-
-
-void med_check_all_vertices()
-{
-	int		s,v;
-	segment	*sp;
-
-	for (s=0; s<Num_segments; s++) {
-		sp = &Segments[s];
-		if (sp->segnum != -1)
-			for (v=0; v<MAX_VERTICES_PER_SEGMENT; v++)
-				Assert(sp->verts[v] <= Highest_vertex_index);
-					
-	}
-
-}