diff --git a/src/OpenFOAM/containers/Lists/List/List.C b/src/OpenFOAM/containers/Lists/List/List.C
index 302529f81fb598fb65350e19f792630f1bd219c9..68f0c6440bd134de7cf754103e3c5f271b0df983 100644
--- a/src/OpenFOAM/containers/Lists/List/List.C
+++ b/src/OpenFOAM/containers/Lists/List/List.C
@@ -50,6 +50,7 @@ void Foam::List<T>::doResize(const label newSize)
     {
         if (newSize > 0)
         {
+            // With sign-check to avoid spurious -Walloc-size-larger-than
             T* nv = new T[newSize];
 
             const label overlap = min(this->size_, newSize);
diff --git a/src/OpenFOAM/containers/Lists/List/ListI.H b/src/OpenFOAM/containers/Lists/List/ListI.H
index a7b0aca30c5aa85fa09512a73bd97878e852984f..650afea8c1ff1226a21d7a990c408516729e8629 100644
--- a/src/OpenFOAM/containers/Lists/List/ListI.H
+++ b/src/OpenFOAM/containers/Lists/List/ListI.H
@@ -31,8 +31,9 @@ License
 template<class T>
 inline void Foam::List<T>::doAlloc()
 {
-    if (this->size_)
+    if (this->size_ > 0)
     {
+        // With sign-check to avoid spurious -Walloc-size-larger-than
         this->v_ = new T[this->size_];
     }
 }
diff --git a/src/OpenFOAM/matrices/Matrix/MatrixI.H b/src/OpenFOAM/matrices/Matrix/MatrixI.H
index 6d96f4c0e4ddead2e03c554eaed4bae328e012ba..2dc069a6f56c32db223bcfeccc8e942276174e8a 100644
--- a/src/OpenFOAM/matrices/Matrix/MatrixI.H
+++ b/src/OpenFOAM/matrices/Matrix/MatrixI.H
@@ -35,8 +35,9 @@ inline void Foam::Matrix<Form, Type>::doAlloc()
 {
     const label len = size();
 
-    if (len)
+    if (len > 0)
     {
+        // With sign-check to avoid spurious -Walloc-size-larger-than
         v_ = new Type[len];
     }
 }
diff --git a/wmake/rules/linux64Mingw/c++ b/wmake/rules/linux64Mingw/c++
index aebb7a88312a9872d179a6f17ca74439f4f8f34f..4aad3937215a78d2493388a38782a0cb8694147e 100644
--- a/wmake/rules/linux64Mingw/c++
+++ b/wmake/rules/linux64Mingw/c++
@@ -9,7 +9,7 @@ include $(RULES)/c++$(WM_COMPILE_OPTION)
 
 c++FLAGS    = $(c++ARCH) $(GFLAGS) $(c++WARN) $(c++OPT) $(c++DBUG) $(ptFLAGS) $(LIB_HEADER_DIRS)
 
-Ctoo        = $(WM_SCHEDULER) $(CC) $(c++FLAGS) -Wno-alloc-size-larger-than -c $< -o $@
+Ctoo        = $(WM_SCHEDULER) $(CC) $(c++FLAGS) -c $< -o $@
 cxxtoo      = $(Ctoo)
 cctoo       = $(Ctoo)
 cpptoo      = $(Ctoo)