diff --git a/configure b/configure
index e6b6c99e2..fdd668550 100755
--- a/configure
+++ b/configure
@@ -11698,6 +11698,8 @@ build_zerosum() {
     fi
     if [ "${mpi}" = "yes" ] ; then
         echo "TAUMPI=-DZeroSum_WITH_MPI=TRUE" >> ${zerosum_include_file}
+    else
+        echo "TAUMPI=-DZeroSum_WITH_MPI=FALSE" >> ${zerosum_include_file}
     fi
     cp etc/Makefile.zerosum zerosum/Makefile
     fixmakeargs="$fixmakeargs ZeroSum "
diff --git a/etc/Makefile.zerosum b/etc/Makefile.zerosum
index 2c8b186ce..02b7a91b1 100644
--- a/etc/Makefile.zerosum
+++ b/etc/Makefile.zerosum
@@ -1,7 +1,7 @@
 include zerosum.mk
 
 build/CMakeCache.txt:
-	cmake -B build -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_C_COMPILER=$(CC) -DCMAKE_CXX_COMPILER=$(CXX) -DZeroSum_BUILD_TESTS=FALSE -DCMAKE_INSTALL_PREFIX=$(PREFIX)/$(TAUARCH) $(TAUOMPT) $(TAUCFLAGS) $(TAUCXXFLAGS) $(TAUCUDA) $(TAUHIP) $(TAUSYCL)
+	cmake -B build -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_C_COMPILER=$(CC) -DCMAKE_CXX_COMPILER=$(CXX) -DZeroSum_BUILD_TESTS=FALSE -DCMAKE_INSTALL_PREFIX=$(PREFIX)/$(TAUARCH) $(TAUOMPT) $(TAUCFLAGS) $(TAUCXXFLAGS) $(TAUCUDA) $(TAUHIP) $(TAUSYCL) $(TAUMPI)
 
 all : build/CMakeCache.txt
 	$(MAKE) -C build all