diff --git a/materials/sections/geospatial-vector-analysis.qmd b/materials/sections/geospatial-vector-analysis.qmd
index 6657761c..602e2094 100644
--- a/materials/sections/geospatial-vector-analysis.qmd
+++ b/materials/sections/geospatial-vector-analysis.qmd
@@ -390,6 +390,8 @@ We will add `ggspatial::annotation_map_tile()` function into `ggplot` to add a b
 ```{r}
 #| message: false
 #| warning: false
+#| eval: false
+
 
 ggplot(data = pop_3338) +
     ggspatial::annotation_map_tile(type = "osm", zoom = 4) + # higher zoom values are more detailed 
diff --git a/materials/session_19.qmd b/materials/session_19.qmd
index 70ac59f3..25adff1d 100644
--- a/materials/session_19.qmd
+++ b/materials/session_19.qmd
@@ -6,8 +6,6 @@ title-block-banner: true
 
 
 
-
-
 {{< include /sections/geospatial-vector-analysis.qmd >}}