diff --git a/modules/cc.cmake b/modules/cc.cmake
index 100efa4..06e6e42 100644
--- a/modules/cc.cmake
+++ b/modules/cc.cmake
@@ -21,7 +21,7 @@
 #
 #   docopt: --cc=<CC> C compiler [default: gcc].
 #           --extra-cc-flags=<EXTRA_CFLAGS> Extra C compiler flags [default: ''].
-#   export: 'CC="{0}"'.format(arguments['--cc'])
+#   export: 'CC={0}'.format(arguments['--cc'])
 #   define: '-DEXTRA_CFLAGS="{0}"'.format(arguments['--extra-cc-flags'])
 
 enable_language(C)
diff --git a/modules/cxx.cmake b/modules/cxx.cmake
index 76bb40f..d81ff3e 100644
--- a/modules/cxx.cmake
+++ b/modules/cxx.cmake
@@ -21,7 +21,7 @@
 #
 #   docopt: --cxx=<CXX> C++ compiler [default: g++].
 #           --extra-cxx-flags=<EXTRA_CXXFLAGS> Extra C++ compiler flags [default: ''].
-#   export: 'CXX="{0}"'.format(arguments['--cxx'])
+#   export: 'CXX={0}'.format(arguments['--cxx'])
 #   define: '-DEXTRA_CXXFLAGS="{0}"'.format(arguments['--extra-cxx-flags'])
 
 enable_language(CXX)
diff --git a/modules/fc.cmake b/modules/fc.cmake
index 634aa33..657a06b 100644
--- a/modules/fc.cmake
+++ b/modules/fc.cmake
@@ -25,7 +25,7 @@
 #
 #   docopt: --fc=<FC> Fortran compiler [default: gfortran].
 #           --extra-fc-flags=<EXTRA_FCFLAGS> Extra Fortran compiler flags [default: ''].
-#   export: 'FC="{0}"'.format(arguments['--fc'])
+#   export: 'FC={0}'.format(arguments['--fc'])
 #   define: '-DEXTRA_FCFLAGS="{0}"'.format(arguments['--extra-fc-flags'])
 
 enable_language(Fortran)
diff --git a/modules/fc_optional.cmake b/modules/fc_optional.cmake
index a0b0004..aec0d7e 100644
--- a/modules/fc_optional.cmake
+++ b/modules/fc_optional.cmake
@@ -31,7 +31,7 @@
 #   docopt: --fc=<FC> Fortran compiler [default: gfortran].
 #           --extra-fc-flags=<EXTRA_FCFLAGS> Extra Fortran compiler flags [default: ''].
 #           --fc-support=<FC_SUPPORT> Toggle Fortran language support (ON/OFF) [default: ON].
-#   export: 'FC="{0}"'.format(arguments['--fc'])
+#   export: 'FC={0}'.format(arguments['--fc'])
 #   define: '-DEXTRA_FCFLAGS="{0}"'.format(arguments['--extra-fc-flags'])
 #           '-DENABLE_FC_SUPPORT="{0}"'.format(arguments['--fc-support'])