diff --git a/benchmarks/ecal_gaps/Snakefile b/benchmarks/ecal_gaps/Snakefile
index 7046eb60..91ffa7c2 100644
--- a/benchmarks/ecal_gaps/Snakefile
+++ b/benchmarks/ecal_gaps/Snakefile
@@ -41,7 +41,8 @@ rule ecal_gaps_recon:
     wildcard_constraints:
         INDEX="\d{4}",
     shell: """
-eicrecon {input} -Ppodio:output_file={output} \
+env DETECTOR_CONFIG={wildcards.DETECTOR_CONFIG} \
+  eicrecon {input} -Ppodio:output_file={output} \
   -Ppodio:output_include_collections=EcalEndcapNRecHits,EcalBarrelScFiRecHits,EcalBarrelImagingRecHits,EcalEndcapPRecHits,MCParticles
 """