diff --git a/cmake/Modules/Packages/USER-MOLFILE.cmake b/cmake/Modules/Packages/USER-MOLFILE.cmake
index 1a2df2202b..4d414acead 100644
--- a/cmake/Modules/Packages/USER-MOLFILE.cmake
+++ b/cmake/Modules/Packages/USER-MOLFILE.cmake
@@ -1,4 +1,5 @@
-set(MOLFILE_INCLUDE_DIRS "${LAMMPS_LIB_SOURCE_DIR}/molfile" CACHE STRING "Path to VMD molfile plugin headers")
+set(MOLFILE_INCLUDE_DIR "${LAMMPS_LIB_SOURCE_DIR}/molfile" CACHE STRING "Path to VMD molfile plugin headers")
+set(MOLFILE_INCLUDE_DIRS "${MOLFILE_INCLUDE_DIR}")
 add_library(molfile INTERFACE)
 target_include_directories(molfile INTERFACE ${MOLFILE_INCLUDE_DIRS})
 # no need to link with -ldl on windows
diff --git a/doc/src/Build_extras.rst b/doc/src/Build_extras.rst
index 9595849b58..55a41a4ba2 100644
--- a/doc/src/Build_extras.rst
+++ b/doc/src/Build_extras.rst
@@ -73,7 +73,7 @@ If CMake cannot find the library, you can set these variables:
 .. code-block:: bash
 
    -D ZLIB_INCLUDE_DIR=path    # path to zlib.h header file
-   -D ZLIB_LIBRARIES=path      # path to libz.a (.so) file
+   -D ZLIB_LIBRARY=path        # path to libz.a (.so) file
 
 Traditional make
 ^^^^^^^^^^^^^^^^
@@ -1370,11 +1370,11 @@ CMake build
 
 .. code-block:: bash
 
-   -D MOLFILE_INCLUDE_DIRS=path   # (optional) path where VMD molfile plugin headers are installed
+   -D MOLFILE_INCLUDE_DIR=path   # (optional) path where VMD molfile plugin headers are installed
    -D PKG_USER-MOLFILE=yes
 
 Using "-D PKG_USER-MOLFILE=yes" enables the package, and setting
-"-D MOLFILE_INCLUDE DIRS" allows to provide a custom location for
+"-D MOLFILE_INCLUDE DIR" allows to provide a custom location for
 the molfile plugin header files. These should match the ABI of the
 plugin files used, and thus one typically sets them to include
 folder of the local VMD installation in use. LAMMPS ships with a