diff --git a/t/perf/aggregate.perl b/t/perf/aggregate.perl
index 575d2000cc..1791c7528a 100755
--- a/t/perf/aggregate.perl
+++ b/t/perf/aggregate.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 use lib '../../perl/build/lib';
 use strict;
diff --git a/t/perf/perf-lib.sh b/t/perf/perf-lib.sh
index 1a9a51ca3c..4173eee4de 100644
--- a/t/perf/perf-lib.sh
+++ b/t/perf/perf-lib.sh
@@ -276,7 +276,7 @@ test_perf_ () {
 	else
 		test_ok_ "$1"
 	fi
-	"$TEST_DIRECTORY"/perf/min_time.perl test_time.* >"$base".result
+	"$PERL_PATH" "$TEST_DIRECTORY"/perf/min_time.perl test_time.* >"$base".result
 	rm test_time.*
 }
 
@@ -324,7 +324,7 @@ test_at_end_hook_ () {
 	if test -z "$GIT_PERF_AGGREGATING_LATER"; then
 		(
 			cd "$TEST_DIRECTORY"/perf &&
-			./aggregate.perl --results-dir="$TEST_RESULTS_DIR" $(basename "$0")
+			"$PERL_PATH" ./aggregate.perl --results-dir="$TEST_RESULTS_DIR" $(basename "$0")
 		)
 	fi
 }
diff --git a/t/perf/run b/t/perf/run
index 486ead2198..073bcb2aff 100755
--- a/t/perf/run
+++ b/t/perf/run
@@ -192,10 +192,10 @@ run_subsection () {
 
 	if test -z "$GIT_PERF_SEND_TO_CODESPEED"
 	then
-		./aggregate.perl --results-dir="$TEST_RESULTS_DIR" $codespeed_opt "$@"
+		"$PERL_PATH" ./aggregate.perl --results-dir="$TEST_RESULTS_DIR" $codespeed_opt "$@"
 	else
 		json_res_file=""$TEST_RESULTS_DIR"/$GIT_PERF_SUBSECTION/aggregate.json"
-		./aggregate.perl --results-dir="$TEST_RESULTS_DIR" --codespeed "$@" | tee "$json_res_file"
+		"$PERL_PATH" ./aggregate.perl --results-dir="$TEST_RESULTS_DIR" --codespeed "$@" | tee "$json_res_file"
 		send_data_url="$GIT_PERF_SEND_TO_CODESPEED/result/add/json/"
 		curl -v --request POST --data-urlencode "json=$(cat "$json_res_file")" "$send_data_url"
 	fi