diff --git a/scripts/build_hydro_profile.py b/scripts/build_hydro_profile.py
index cd51ce90..f1e56532 100644
--- a/scripts/build_hydro_profile.py
+++ b/scripts/build_hydro_profile.py
@@ -139,7 +139,8 @@ def approximate_missing_eia_stats(eia_stats, runoff_fn, countries):
     runoff.index = runoff.index.astype(int)
 
     # fix outliers; exceptional floods in 1977-1979 in ES & PT
-    runoff.loc[1978, ["ES", "PT"]] = runoff.loc[1979, ["ES", "PT"]]
+    if ("ES" and "PT") in runoff:
+        runoff.loc[1978, ["ES", "PT"]] = runoff.loc[1979, ["ES", "PT"]]
 
     runoff_eia = runoff.loc[eia_stats.index]