diff --git a/disko b/disko
index 845b204..94ca2fe 100755
--- a/disko
+++ b/disko
@@ -118,6 +118,9 @@ if [[ -n "${flake+x}" ]]; then
     echo "For example, to use the output diskoConfigurations.foo from the flake.nix, append \"#foo\" to the flake-uri."
     exit 1
   fi
+  if [[ -e "$flake" ]]; then
+    flake=$(realpath "$flake")
+  fi
   nix_args+=("--arg" "flake" "\"$flake\"")
   nix_args+=("--argstr" "flakeAttr" "$flakeAttr")
   nix_args+=(--extra-experimental-features flakes)
diff --git a/disko-install b/disko-install
index 330f896..fde0598 100755
--- a/disko-install
+++ b/disko-install
@@ -151,6 +151,11 @@ main() {
     flake="${BASH_REMATCH[1]}"
     flakeAttr="${BASH_REMATCH[2]}"
   fi
+
+  if [[ -e "$flake" ]]; then
+    flake=$(realpath "$flake")
+  fi
+
   if [[ -z ${flakeAttr-} ]]; then
     echo "Please specify the name of the NixOS configuration to be installed, as a URI fragment in the flake-uri." >&2
     echo 'For example, to use the output nixosConfigurations.foo from the flake.nix, append "#foo" to the flake-uri.' >&2