3 files changed, 3 insertions, 3 deletions
diff --git a/pkgs/development/tools/misc/swig/2.x.nix b/pkgs/development/tools/misc/swig/2.x.nix
index 6dbaca26c8181..acf1988c947d3 100644
--- a/pkgs/development/tools/misc/swig/2.x.nix
+++ b/pkgs/development/tools/misc/swig/2.x.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoconf automake libtool bison ];
   buildInputs = [ pcre ];
 
-  configureFlags = "--without-tcl";
+  configureFlags = [ "--without-tcl" ];
 
   postPatch = ''
     # Disable ccache documentation as it need yodl
diff --git a/pkgs/development/tools/misc/swig/3.x.nix b/pkgs/development/tools/misc/swig/3.x.nix
index 48a2e7bd2cb16..077d037aa97fb 100644
--- a/pkgs/development/tools/misc/swig/3.x.nix
+++ b/pkgs/development/tools/misc/swig/3.x.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoconf automake libtool bison ];
   buildInputs = [ pcre ];
 
-  configureFlags = "--without-tcl";
+  configureFlags = [ "--without-tcl" ];
 
   postPatch = ''
     # Disable ccache documentation as it need yodl
diff --git a/pkgs/development/tools/misc/swig/default.nix b/pkgs/development/tools/misc/swig/default.nix
index e10fd25d046f0..cfd1c7728cb26 100644
--- a/pkgs/development/tools/misc/swig/default.nix
+++ b/pkgs/development/tools/misc/swig/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   # 'make check' uses boost and tcl
   buildInputs = stdenv.lib.optionals doCheck [ boost tcl ];
 
-  configureFlags = "--disable-ccache";
+  configureFlags = [ "--disable-ccache" ];
 
   meta = {
     description = "Interface compiler that connects C/C++ code to higher-level languages";