diff --git a/bin/tests/system/run.sh b/bin/tests/system/run.sh
index c2f0d63bfe..6754a4252d 100755
--- a/bin/tests/system/run.sh
+++ b/bin/tests/system/run.sh
@@ -13,7 +13,7 @@
 # Run a system test.
 #
 
-SYSTEMTESTTOP=$(realpath .)
+SYSTEMTESTTOP="$(cd -P -- "$(dirname -- "$0")" && pwd -P)"
 . $SYSTEMTESTTOP/conf.sh
 
 export SYSTEMTESTTOP
diff --git a/bin/tests/system/start.sh b/bin/tests/system/start.sh
index c5661c52eb..e71c7d6449 100755
--- a/bin/tests/system/start.sh
+++ b/bin/tests/system/start.sh
@@ -9,7 +9,7 @@
 # See the COPYRIGHT file distributed with this work for additional
 # information regarding copyright ownership.
 
-SYSTEMTESTTOP="$(realpath "$(dirname "$0")")"
+SYSTEMTESTTOP="$(cd -P -- "$(dirname -- "$0")" && pwd -P)"
 # shellcheck source=conf.sh
 . "$SYSTEMTESTTOP/conf.sh"
 export SYSTEMTESTTOP
diff --git a/bin/tests/system/stop.sh b/bin/tests/system/stop.sh
index 878f6aba23..ba1256bc43 100755
--- a/bin/tests/system/stop.sh
+++ b/bin/tests/system/stop.sh
@@ -9,7 +9,7 @@
 # See the COPYRIGHT file distributed with this work for additional
 # information regarding copyright ownership.
 
-SYSTEMTESTTOP="$(realpath "$(dirname "$0")")"
+SYSTEMTESTTOP="$(cd -P -- "$(dirname -- "$0")" && pwd -P)"
 # shellcheck source=conf.sh
 . "$SYSTEMTESTTOP/conf.sh"
 export SYSTEMTESTTOP