diff --git a/cmake/FindCoMISo.cmake b/cmake/FindCoMISo.cmake
index 6e2edf1953d41113ae359cccacf21669d94790b7..2bcd2cbc5c6f70dfe904b8bdd2199595a7288891 100644
--- a/cmake/FindCoMISo.cmake
+++ b/cmake/FindCoMISo.cmake
@@ -37,6 +37,9 @@ FIND_PATH( COMISO_INCLUDE_DIR CoMISo/Solver/MISolver.hh
 
 if ( COMISO_INCLUDE_DIR AND COMISO_CONFIG_INCLUDE_DIR )
 
+  # add COMISO_INCLUDE_DIR/CoMISo so stuff in CoMISo/Base can be included by <Base/...>
+  set(COMISO_INCLUDE_DIR "${COMISO_INCLUDE_DIR};${COMISO_INCLUDE_DIR}/CoMISo")
+
   FILE(READ ${COMISO_CONFIG_INCLUDE_DIR}/CoMISo/Config/config.hh CURRENT_COMISO_CONFIG)
 
   set(COMISO_OPT_DEPS "")