diff --git a/cmake/config.cmake b/cmake/config.cmake
index a92a06805..7bf8a1616 100644
--- a/cmake/config.cmake
+++ b/cmake/config.cmake
@@ -61,7 +61,7 @@ set(FCLAW_HAVE_UNISTD_H ${P4EST_HAVE_UNISTD_H} CACHE BOOL "Have unistd.h")
 
 set(FCLAW_PACKAGE \"${PROJECT_NAME}\")
 
-if(TARGET HDF5::HDF5)
+if(FCLAW_ENABLE_HDF5)
   set(FCLAW_WITH_HDF5 1)
 endif()