diff --git a/CMakeLists.txt b/CMakeLists.txt
index fb2abf7c69339acb4b86de0605deaac89253fec2..d76a4a0064c1fb20a8ae337ff39a14239aa41356 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -642,16 +642,16 @@ if(ENABLE_MATHEX)
 endif(ENABLE_MATHEX)
 
 if(ENABLE_MPI)
-   find_package(MPI)
-   if(MPI_FOUND)
-     set_config_option(HAVE_MPI "MPI")
-     list(APPEND EXTERNAL_INCLUDES ${MPI_INCLUDE_DIR})
-     list(APPEND EXTERNAL_LIBRARIES ${MPI_LIBRARIES})
-     include(CMakeForceCompiler)
-     # Warning: this actually requires cmake >= 2.8.5
-     cmake_force_c_compiler(${MPI_C_COMPILER} "MPI C Compiler")
-     cmake_force_cxx_compiler(${MPI_CXX_COMPILER} "MPI C++ Compiler")
-   endif(MPI_FOUND)
+  find_package(MPI)
+  if(MPI_FOUND)
+    set_config_option(HAVE_MPI "MPI")
+    list(APPEND EXTERNAL_INCLUDES ${MPI_INCLUDE_DIR})
+    list(APPEND EXTERNAL_LIBRARIES ${MPI_LIBRARIES})
+    include(CMakeForceCompiler)
+    # Warning: this actually requires cmake >= 2.8.5
+    cmake_force_c_compiler(${MPI_C_COMPILER} "MPI C Compiler")
+    cmake_force_cxx_compiler(${MPI_CXX_COMPILER} "MPI C++ Compiler")
+  endif(MPI_FOUND)
 endif(ENABLE_MPI)
 
 if(ENABLE_POPPLER)
@@ -659,10 +659,10 @@ if(ENABLE_POPPLER)
   find_library(POPPLER_CPP_LIB poppler-cpp)
   find_path(POPPLER_INC "poppler/cpp/poppler-document.h" PATH_SUFFIXES src include)
   if(POPPLER_LIB AND POPPLER_INC)
-     set_config_option(HAVE_POPPLER "Poppler")
-     list(APPEND EXTERNAL_LIBRARIES ${POPPLER_LIB})
-     list(APPEND EXTERNAL_LIBRARIES ${POPPLER_CPP_LIB})
-     list(APPEND EXTERNAL_INCLUDES ${POPPLER_INC})
+    set_config_option(HAVE_POPPLER "Poppler")
+    list(APPEND EXTERNAL_LIBRARIES ${POPPLER_LIB})
+    list(APPEND EXTERNAL_LIBRARIES ${POPPLER_CPP_LIB})
+    list(APPEND EXTERNAL_INCLUDES ${POPPLER_INC})
   endif(POPPLER_LIB AND POPPLER_INC)
 endif(ENABLE_POPPLER)