diff --git a/install/scripts/install_ocaml.sh b/install/scripts/install_ocaml.sh
index 913ae75d..ea5bb5e4 100755
--- a/install/scripts/install_ocaml.sh
+++ b/install/scripts/install_ocaml.sh
@@ -9,7 +9,7 @@ PACKAGES="core cryptokit zarith ocamlfind sexplib ZMQ"
 #ppx_sexp_conv
 
 # Needed for ZeroMQ
-export C_INCLUDE_PATH="${QP_ROOT}"/lib:"${C_INCLUDE_PATH}"
+export C_INCLUDE_PATH="${QP_ROOT}"/include:"${C_INCLUDE_PATH}"
 export LIBRARY_PATH="${QP_ROOT}"/lib:"${LIBRARY_PATH}"
 export LD_LIBRARY_PATH="${QP_ROOT}"/lib:"${LD_LIBRARY_PATH}"