diff --git a/cave_data/1626-E09.html b/cave_data/1626-311.html
similarity index 95%
rename from cave_data/1626-E09.html
rename to cave_data/1626-311.html
index 5e754ae9c..99f242ed0 100644
--- a/cave_data/1626-E09.html
+++ b/cave_data/1626-311.html
@@ -20,12 +20,12 @@ the form documented at
Roehre Höhle (E09)
1626
-
+311
E09
- 1626-E09
+ 1626-311
diff --git a/entrance_data/1626-E09.html b/entrance_data/1626-311.html
similarity index 96%
rename from entrance_data/1626-E09.html
rename to entrance_data/1626-311.html
index 3e8e3d3c6..5c55b3025 100644
--- a/entrance_data/1626-E09.html
+++ b/entrance_data/1626-311.html
@@ -20,7 +20,6 @@ though, you do not need to do a data import as it happens automatically -->
False
-
Torben Schulz, Thomas Holder, Robert Winkler
@@ -52,7 +51,7 @@ though, you do not need to do a data import as it happens automatically -->
-1626.pE09
+1626.p311