diff --git a/CMakeLists.txt b/CMakeLists.txt
index dffed0aac..eeb5cce1a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -48,7 +48,8 @@ if(BUILD_NDPI)
     ExternalProject_Add(
         libnDPI
         SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/libnDPI
-        CONFIGURE_COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/libnDPI/autogen.sh
+        CONFIGURE_COMMAND git submodule update --init &&
+                          ${CMAKE_CURRENT_SOURCE_DIR}/libnDPI/autogen.sh
                           --prefix=${CMAKE_CURRENT_BINARY_DIR}/libnDPI
                           ${BUILD_NDPI_CONFIGURE_OPTS}
         BUILD_COMMAND make
diff --git a/README.md b/README.md
index a554638e8..2b2e034d8 100644
--- a/README.md
+++ b/README.md
@@ -91,7 +91,6 @@ cmake .. -DSTATIC_LIBNDPI_INSTALLDIR=[path/to/your/libnDPI/installdir] -DNDPI_WI
 Or if this is all too much for you, let CMake do it for you:
 
 ```shell
-git submodule update --init
 mkdir build
 cd build
 cmake .. -DBUILD_NDPI=ON