diff --git a/hpath-filepath/run-doctests.sh b/hpath-filepath/run-doctests.sh
index 305574c..ad714f8 100755
--- a/hpath-filepath/run-doctests.sh
+++ b/hpath-filepath/run-doctests.sh
@@ -18,4 +18,6 @@ fi
 
 set -x
 
-cabal exec doctest -- -ihpath-filepath/src -XOverloadedStrings System.Posix.FilePath
+cd "$(CDPATH= cd -- "$(dirname -- "$0")" && pwd -P)"
+
+cabal exec doctest -- -isrc -XOverloadedStrings System.Posix.FilePath
diff --git a/hpath/run-doctests.sh b/hpath/run-doctests.sh
index 48c6640..2b260f8 100755
--- a/hpath/run-doctests.sh
+++ b/hpath/run-doctests.sh
@@ -18,4 +18,6 @@ fi
 
 set -x
 
-cabal exec doctest -- -ihpath/src -XOverloadedStrings -XQuasiQuotes HPath
+cd "$(CDPATH= cd -- "$(dirname -- "$0")" && pwd -P)"
+
+cabal exec doctest -- -isrc -XOverloadedStrings -XQuasiQuotes HPath