diff --git a/Source/FieldSolver/ImplicitSolvers/WarpXSolverVec.H b/Source/FieldSolver/ImplicitSolvers/WarpXSolverVec.H
index 65ade71ce1f..4e8d6fc3328 100644
--- a/Source/FieldSolver/ImplicitSolvers/WarpXSolverVec.H
+++ b/Source/FieldSolver/ImplicitSolvers/WarpXSolverVec.H
@@ -291,7 +291,6 @@ private:
 
     inline static bool m_warpx_ptr_defined = false;
     inline static WarpX* m_WarpX = nullptr;
-    void SetWarpXPointer( WarpX*  a_WarpX );
 
 };
 
diff --git a/Source/FieldSolver/ImplicitSolvers/WarpXSolverVec.cpp b/Source/FieldSolver/ImplicitSolvers/WarpXSolverVec.cpp
index 7984af5dec5..4a3ffc742a9 100644
--- a/Source/FieldSolver/ImplicitSolvers/WarpXSolverVec.cpp
+++ b/Source/FieldSolver/ImplicitSolvers/WarpXSolverVec.cpp
@@ -52,7 +52,12 @@ void WarpXSolverVec::Define ( WarpX*     a_WarpX,
     }
 
     m_is_defined = true;
-    SetWarpXPointer(a_WarpX);
+
+    // Define static member pointer to WarpX
+    if (!m_warpx_ptr_defined) {
+        m_WarpX = a_WarpX;
+        m_warpx_ptr_defined = true;
+    }
 }
 
 void WarpXSolverVec::Copy ( FieldType  a_array_type,
@@ -82,13 +87,6 @@ void WarpXSolverVec::Copy ( FieldType  a_array_type,
     }
 }
 
-void WarpXSolverVec::SetWarpXPointer( WarpX*  a_WarpX )
-{
-    if (m_warpx_ptr_defined) { return; }
-    m_WarpX = a_WarpX;
-    m_warpx_ptr_defined = true;
-}
-
 [[nodiscard]] amrex::Real WarpXSolverVec::dotProduct ( const WarpXSolverVec&  a_X ) const
 {
     WARPX_ALWAYS_ASSERT_WITH_MESSAGE(