diff --git a/packages/epic-eic/package.py b/packages/epic-eic/package.py
index 07d0c3b..a7ec6a4 100644
--- a/packages/epic-eic/package.py
+++ b/packages/epic-eic/package.py
@@ -165,6 +165,7 @@ def postinstall(self, spec, prefix):
                 os.environ["LD_LIBRARY_PATH"] += os.pathsep + self.prefix.lib
                 if spec.satisfies("@:24.03"):  # no rpath linking until 24.04
                     os.environ["LD_LIBRARY_PATH"] += os.pathsep + self.spec["root"].prefix.lib.root
+                    os.environ["LD_LIBRARY_PATH"] += os.pathsep + self.spec["fmt"].prefix.lib
                 os.environ["DETECTOR_PATH"] = detector_path
                 checkGeometry = Executable(join_path(spec['dd4hep'].prefix.bin, 'checkGeometry'))
                 checkGeometry('-c', join_path(detector_path, spec.variants["artifacts"].value + ".xml"))