diff --git a/openmp/libomptarget/DeviceRTL/src/Parallelism.cpp b/openmp/libomptarget/DeviceRTL/src/Parallelism.cpp
--- a/openmp/libomptarget/DeviceRTL/src/Parallelism.cpp
+++ b/openmp/libomptarget/DeviceRTL/src/Parallelism.cpp
@@ -93,6 +93,7 @@
 
   uint32_t NumThreads = determineNumberOfThreads(num_threads);
   if (mapping::isSPMDMode()) {
+    synchronize::threads();
     {
       state::ValueRAII ParallelTeamSizeRAII(state::ParallelTeamSize, NumThreads,
                                             1u, TId == 0);