diff --git a/pkgs/development/libraries/openjpeg/default.nix b/pkgs/development/libraries/openjpeg/default.nix
index e0229f3ed9d..5c6d6b8a134 100644
--- a/pkgs/development/libraries/openjpeg/default.nix
+++ b/pkgs/development/libraries/openjpeg/default.nix
@@ -58,7 +58,7 @@ stdenv.mkDerivation rec {
   nativeCheckInputs = [ jpylyzer ];
   checkPhase = ''
     substituteInPlace ../tools/ctest_scripts/travis-ci.cmake \
-      --replace "JPYLYZER_EXECUTABLE=" "JPYLYZER_EXECUTABLE=\"jpylyzer\" # "
+      --replace "JPYLYZER_EXECUTABLE=" "JPYLYZER_EXECUTABLE=\"$(command -v jpylyzer)\" # "
     OPJ_SOURCE_DIR=.. ctest -S ../tools/ctest_scripts/travis-ci.cmake
   '';