diff --git a/pkgs/applications/audio/ecasound/default.nix b/pkgs/applications/audio/ecasound/default.nix
index 108be8726c5..f23b11d1a67 100644
--- a/pkgs/applications/audio/ecasound/default.nix
+++ b/pkgs/applications/audio/ecasound/default.nix
@@ -60,7 +60,7 @@ stdenv.mkDerivation rec {
   strictDeps = true;
 
   CXXFLAGS = "-std=c++11";
-  configureFlags = "--enable-liblilv --with-extra-cppflags=-Dnullptr=0";
+  configureFlags = [ "--enable-liblilv" "--with-extra-cppflags=-Dnullptr=0" ];
 
   postPatch = ''
     sed -i -e '
diff --git a/pkgs/applications/science/logic/alt-ergo/default.nix b/pkgs/applications/science/logic/alt-ergo/default.nix
index 096a648b4dd..0767c58bdea 100644
--- a/pkgs/applications/science/logic/alt-ergo/default.nix
+++ b/pkgs/applications/science/logic/alt-ergo/default.nix
@@ -17,7 +17,7 @@ in
 let alt-ergo-lib = ocamlPackages.buildDunePackage rec {
   pname = "alt-ergo-lib";
   inherit version src useDune2;
-  configureFlags = pname;
+  configureFlags = [ pname ];
   nativeBuildInputs = [ which ];
   buildInputs = with ocamlPackages; [ dune-configurator ];
   propagatedBuildInputs = with ocamlPackages; [ num ocplib-simplex stdlib-shims zarith ];
@@ -26,7 +26,7 @@ let alt-ergo-lib = ocamlPackages.buildDunePackage rec {
 let alt-ergo-parsers = ocamlPackages.buildDunePackage rec {
   pname = "alt-ergo-parsers";
   inherit version src useDune2;
-  configureFlags = pname;
+  configureFlags = [ pname ];
   nativeBuildInputs = [ which ocamlPackages.menhir ];
   propagatedBuildInputs = [ alt-ergo-lib ] ++ (with ocamlPackages; [ camlzip psmt2-frontend ]);
 }; in
@@ -35,7 +35,7 @@ ocamlPackages.buildDunePackage {
 
   inherit pname version src useDune2;
 
-  configureFlags = pname;
+  configureFlags = [ pname ];
 
   nativeBuildInputs = [ which ocamlPackages.menhir ];
   buildInputs = [ alt-ergo-parsers ocamlPackages.cmdliner ];
diff --git a/pkgs/development/ocaml-modules/stdcompat/default.nix b/pkgs/development/ocaml-modules/stdcompat/default.nix
index eae9b264ba1..3630be368e5 100644
--- a/pkgs/development/ocaml-modules/stdcompat/default.nix
+++ b/pkgs/development/ocaml-modules/stdcompat/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   # build fails otherwise
   enableParallelBuilding = false;
 
-  configureFlags = "--libdir=$(OCAMLFIND_DESTDIR)";
+  configureFlags = [ "--libdir=$(OCAMLFIND_DESTDIR)" ];
 
   meta = {
     homepage = "https://github.com/thierry-martinez/stdcompat";