diff --git a/cluster_configs/inm-cluster-avx.cmake b/cluster_configs/inm-cluster-avx.cmake
index be5ec94cb0b6c3b7753c1eee925923c23332a944..6d43725021acbd2f4d03c88617f2fea21052702d 100644
--- a/cluster_configs/inm-cluster-avx.cmake
+++ b/cluster_configs/inm-cluster-avx.cmake
@@ -57,7 +57,7 @@ endif()
 
 #specify stuff for run-script
 set(cluster_queue "normal"  CACHE STRING "queue" FORCE)
-if (NO_MPI)
+if (NOT NO_MPI)
     set(run_exec "mpirun" CACHE STRING "exec run" FORCE)
 else ()
     set(run_exec "srun" CACHE STRING "exec run" FORCE)
diff --git a/cluster_configs/inm-cluster-avx2.cmake b/cluster_configs/inm-cluster-avx2.cmake
index 0772a66946769ded88bcc6c2fb0bad3f4ac3f6a6..75b1b617a2654a2ce9b74335f9c331fcf6727039 100644
--- a/cluster_configs/inm-cluster-avx2.cmake
+++ b/cluster_configs/inm-cluster-avx2.cmake
@@ -57,7 +57,7 @@ endif()
 
 #specify stuff for run-script
 set(cluster_queue "normal"  CACHE STRING "queue" FORCE)
-if (NO_MPI)
+if (NOT NO_MPI)
   set(run_exec "mpirun" CACHE STRING "exec run" FORCE)
 else ()
   set(run_exec "srun" CACHE STRING "exec run" FORCE)