diff --git a/include/etl/alignment.h b/include/etl/alignment.h
index 627517be..dab55832 100644
--- a/include/etl/alignment.h
+++ b/include/etl/alignment.h
@@ -88,7 +88,7 @@ namespace etl
   //*****************************************************************************
   /// Check that 'p' has 'required_alignment'.
   //*****************************************************************************
-  inline bool is_aligned(void* p, size_t required_alignment)
+  inline bool is_aligned(const void* p, size_t required_alignment)
   {
     uintptr_t address = reinterpret_cast<uintptr_t>(p);
     return (address % required_alignment) == 0U;
@@ -98,7 +98,7 @@ namespace etl
   /// Check that 'p' has 'Alignment'.
   //*****************************************************************************
   template <size_t Alignment>
-  bool is_aligned(void* p)
+  bool is_aligned(const void* p)
   {
     uintptr_t address = reinterpret_cast<uintptr_t>(p);
     return (address % Alignment) == 0U;
@@ -108,7 +108,7 @@ namespace etl
   /// Check that 'p' has the alignment of 'T'.
   //*****************************************************************************
   template <typename T>
-  bool is_aligned(void* p)
+  bool is_aligned(const void* p)
   {
     return is_aligned<etl::alignment_of<T>::value>(p);
   }
diff --git a/test/test_alignment.cpp b/test/test_alignment.cpp
index d9a9de57..73c1f00f 100644
--- a/test/test_alignment.cpp
+++ b/test/test_alignment.cpp
@@ -161,6 +161,23 @@ namespace
       CHECK_FALSE(etl::is_aligned<uint32_t>(p));
     }
 
+    //*************************************************************************
+    TEST(test_is_aligned_tests_const)
+    {
+      alignas(uint32_t) const char buffer[2U * sizeof(uint32_t)] = {0, 1};
+
+      const char* p = buffer;
+
+      CHECK_TRUE(etl::is_aligned(p, std::alignment_of<const uint32_t>()));
+      CHECK_TRUE(etl::is_aligned<alignof(const uint32_t)>(p));
+      CHECK_TRUE(etl::is_aligned<const uint32_t>(p));
+
+      ++p;
+      CHECK_FALSE(etl::is_aligned(p, std::alignment_of<const uint32_t>()));
+      CHECK_FALSE(etl::is_aligned<alignof(const uint32_t)>(p));
+      CHECK_FALSE(etl::is_aligned<const uint32_t>(p));
+    }
+
     //*************************************************************************
     TEST(test_type_with_alignment)
     {
diff --git a/zephyr/module.yml b/zephyr/module.yml
index b292d6a1..743c1299 100644
--- a/zephyr/module.yml
+++ b/zephyr/module.yml
@@ -1,4 +1,6 @@
 name: etl
 build:
+  cmake-ext: true
+  kconfig-ext: true
   cmake: zephyr
   kconfig: zephyr/Kconfig