diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1a344bda0..1fe3fdc66 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,7 +28,7 @@ string(TOUPPER "${CMAKE_BUILD_TYPE}" U_CMAKE_BUILD_TYPE)
 set(Python_ADDITIONAL_VERSIONS 3.4 3.5 3.6 3.7)
 if (NOT ${PYBIND11_PYTHON_VERSION} STREQUAL "")
   find_package(PythonLibs ${PYBIND11_PYTHON_VERSION} EXACT)
-  if (NOT PythonLibs_FOUND)
+  if (NOT PYTHONLIBS_FOUND)
     find_package(PythonLibs ${PYBIND11_PYTHON_VERSION} REQUIRED)
   endif()
 else()
diff --git a/docs/cmake.rst b/docs/cmake.rst
index 02983030d..d405bc395 100644
--- a/docs/cmake.rst
+++ b/docs/cmake.rst
@@ -48,7 +48,7 @@ subdirectory named :file:`pybind11`.
     set(Python_ADDITIONAL_VERSIONS 3.4 3.5 3.6 3.7)
     if (NOT ${EXAMPLE_PYTHON_VERSION} STREQUAL "")
       find_package(PythonLibs ${EXAMPLE_PYTHON_VERSION} EXACT)
-      if (NOT PythonLibs_FOUND)
+      if (NOT PYTHONLIBS_FOUND)
         find_package(PythonLibs ${EXAMPLE_PYTHON_VERSION} REQUIRED)
       endif()
     else()