diff --git a/templates/event-generator/adapt_member.sh b/templates/event-generator/adapt_member.sh
index 585fabcfac4a9ac3065456f16202f292d138859e..9ed0d338cdafd2eedced8f8b96702214ba12ba35 100644
--- a/templates/event-generator/adapt_member.sh
+++ b/templates/event-generator/adapt_member.sh
@@ -58,7 +58,9 @@ integrate_sst_to_extpar "${INTERPOLATED_SST}" "${EXTERNAL_PARAMETERS_FILE}"
 
 # Interpolate analysis
 interpolate_initial_conditions "icon_grid_0024_R02B06_G.nc" "${ANALYSIS_FILE}" "${DESTINATION_GRID}" "interpolated_analysis.nc"
-interpolate_initial_conditions "icon_grid_0024_R02B06_G.nc" "${FG}" "${DESTINATION_GRID}" "first_guess.nc"
+
+# Interpolate first guess
+interpolate_initial_conditions "icon_grid_0024_R02B06_G.nc" "${FG_FILE}" "${DESTINATION_GRID}" "first_guess.nc"
 
 
 integrate_sst_to_analysis "${INTERPOLATED_SST}"