diff --git a/modules/cmake/README.md b/modules/cmake/README.md
index a787bf44..d30d476a 100644
--- a/modules/cmake/README.md
+++ b/modules/cmake/README.md
@@ -15,16 +15,19 @@ $ mb -DSOME_EXTRA_FLAGS="foo"
 ### Options
 
 ```sh
-# Set the install prefix.
+# Set the install prefix (else CMake's default prefix will be used)
 zstyle ':prezto:module:cmake' install-prefix '/usr'
 
-# Set the build prefix.
+# Set the build prefix (else '_build' will be used)
 zstyle ':prezto:module:cmake' build-prefix '_build'
 
-# Set the build profiles.
+# Set the build profiles (else Debug and Release will be used)
 zstyle ':prezto:module:cmake' profiles 'Debug' 'Release'
 
-# Whether to support clang as well.
+# Set the generator (else CMake's default generator will be used)
+zstyle ':prezto:module:cmake' generator 'Unix Makefiles'
+
+# Whether to support clang as well (default is 'yes')
 zstyle ':prezto:module:cmake' support-clang 'yes'
 ```
 
diff --git a/modules/cmake/init.zsh b/modules/cmake/init.zsh
index 61b31b82..4a7e829f 100644
--- a/modules/cmake/init.zsh
+++ b/modules/cmake/init.zsh
@@ -6,9 +6,9 @@
 #   Thomas Moulard <thomas dot moulard at gmail dot com>
 #
 
-# Get the install prefix or use the default.
+# Get the install prefix.
 zstyle -s ':prezto:module:cmake' install-prefix '_cmake_install_prefix' \
-  || _cmake_install_prefix='/usr'
+  || _cmake_install_prefix=
 
 # Get the build prefix.
 zstyle -s ':prezto:module:cmake' build-prefix '_cmake_build_prefix' \
@@ -18,11 +18,15 @@ zstyle -s ':prezto:module:cmake' build-prefix '_cmake_build_prefix' \
 zstyle -a ':prezto:module:cmake' profiles '_cmake_profiles' \
   || _cmake_profiles=(Debug Release)
 
+# Get the generator to use.
+zstyle -s ':prezto:module:cmake' generator '_cmake_generator' \
+  || _cmake_generator=
+
 # Whether to look for clang as well.
 zstyle -b ':prezto:module:cmake' support-clang '_cmake_support_clang' \
   || _cmake_support_clang=true
 
-# Check for clang
+# Check for clang.
 _cmake_has_clang=false
 if (( ${_cmake_support_clang} && $+commands[clang] )); then
   _cmake_has_clang=true
@@ -38,16 +42,25 @@ function makeBuildDirectory
     return 1
   fi
 
-  local common_flags="-DCMAKE_INSTALL_PREFIX=${_cmake_install_prefix}"
+  local common_flags=""
+
+  # If an install prefix was provided.
+  if [[ ! -z "${_cmake_install_prefix}" ]]; then
+    common_flags+=" -DCMAKE_INSTALL_PREFIX=\"${_cmake_install_prefix}\""
+  fi
+
+  # If a generator was provided.
+  if [[ ! -z "${_cmake_generator}" ]]; then
+    common_flags+=" -G\"${_cmake_generator}\""
+  fi
 
   # Create default GCC profiles.
   for p in "${_cmake_profiles[@]}"; do
     echo "*** Creating ${p:l} profile..."
     local build_dir="${d}/${_cmake_build_prefix}/${p:l}"
+    local cmake_cmd="cmake ${common_flags} ${extra_flags} -DCMAKE_BUILD_TYPE=${p} \"${d}\""
     mkdir -p "${build_dir}"
-    (cd "${build_dir}" && \
-      cmake ${common_flags} ${extra_flags} -DCMAKE_BUILD_TYPE=${p} \
-      "${d}")
+    (cd "${build_dir}" && eval ${cmake_cmd})
     echo "*** ...done!"
   done
 
@@ -56,11 +69,9 @@ function makeBuildDirectory
     for p in "${_cmake_profiles[@]}"; do
       echo "*** Creating ${p:l} profile (clang)..."
       local build_dir="${d}/${_cmake_build_prefix}/clang+${p:l}"
+      local cmake_cmd="cmake ${common_flags} ${extra_flags} -DCMAKE_BUILD_TYPE=${p} \"${d}\""
       mkdir -p "${build_dir}"
-      (cd "${build_dir}" && \
-        CC=clang CXX=clang++ \
-        cmake ${common_flags} ${extra_flags} -DCMAKE_BUILD_TYPE=${p} \
-        "${d}")
+      (cd "${build_dir}" && CC=clang CXX=clang++ eval ${cmake_cmd})
       echo "*** ...done!"
     done
   fi