diff --git a/Source/WarpX.cpp b/Source/WarpX.cpp
index ebdb995a476..075c8f9cede 100644
--- a/Source/WarpX.cpp
+++ b/Source/WarpX.cpp
@@ -36,6 +36,7 @@
 #include "FieldSolver/WarpX_FDTD.H"
 #include "Filter/NCIGodfreyFilter.H"
 #include "Initialization/ExternalField.H"
+#include "Initialization/WarpXInit.H"
 #include "Particles/MultiParticleContainer.H"
 #include "Fluids/MultiFluidContainer.H"
 #include "Fluids/WarpXFluidContainer.H"