diff --git a/doc/index/src/examples/rtree/polygons_shared_ptr.cpp b/doc/index/src/examples/rtree/polygons_shared_ptr.cpp
index 5886fbf04..c65ba5376 100644
--- a/doc/index/src/examples/rtree/polygons_shared_ptr.cpp
+++ b/doc/index/src/examples/rtree/polygons_shared_ptr.cpp
@@ -85,4 +85,4 @@ int main(void)
     return 0;
 }
 
-//]
\ No newline at end of file
+//]
diff --git a/doc/index/src/examples/rtree/polygons_vector.cpp b/doc/index/src/examples/rtree/polygons_vector.cpp
index e64e574a1..f0fbc826c 100644
--- a/doc/index/src/examples/rtree/polygons_vector.cpp
+++ b/doc/index/src/examples/rtree/polygons_vector.cpp
@@ -93,4 +93,4 @@ int main(void)
     return 0;
 }
 
-//]
\ No newline at end of file
+//]
diff --git a/doc/index/src/examples/rtree/quick_start.cpp b/doc/index/src/examples/rtree/quick_start.cpp
index efa4b3584..2c81a7d5b 100644
--- a/doc/index/src/examples/rtree/quick_start.cpp
+++ b/doc/index/src/examples/rtree/quick_start.cpp
@@ -84,4 +84,4 @@ int main(void)
     return 0;
 }
 
-//]
\ No newline at end of file
+//]
diff --git a/doc/index/src/examples/rtree/variants_map.cpp b/doc/index/src/examples/rtree/variants_map.cpp
index 427c5567c..462795002 100644
--- a/doc/index/src/examples/rtree/variants_map.cpp
+++ b/doc/index/src/examples/rtree/variants_map.cpp
@@ -140,4 +140,4 @@ int main(void)
     return 0;
 }
 
-//]
\ No newline at end of file
+//]