diff --git a/libs/libxx/libcxxmini/libxx_new.cxx b/libs/libxx/libcxxmini/libxx_new.cxx
index 0488134c203..16aacd16bcd 100644
--- a/libs/libxx/libcxxmini/libxx_new.cxx
+++ b/libs/libxx/libcxxmini/libxx_new.cxx
@@ -22,6 +22,7 @@
 //***************************************************************************
 
 #include <nuttx/config.h>
+#include <assert.h>
 #include <cstddef>
 #include <debug.h>
 
@@ -68,6 +69,8 @@ FAR void *operator new(std::size_t nbytes)
     }
 #endif
 
+  DEBUGASSERT(alloc != nullptr);
+
   // Return the allocated value
 
   return alloc;
@@ -75,13 +78,7 @@ FAR void *operator new(std::size_t nbytes)
 
 FAR void *operator new(std::size_t nbytes, FAR void *ptr)
 {
-
-#ifdef CONFIG_DEBUG_ERROR
-  if (ptr == 0)
-    {
-      _err("ERROR: Failed to placement new\n");
-    }
-#endif
+  DEBUGASSERT(ptr != nullptr);
 
   // Return the ptr pointer
 
diff --git a/libs/libxx/libcxxmini/libxx_newa.cxx b/libs/libxx/libcxxmini/libxx_newa.cxx
index e5871e8f7f4..f2974534a53 100644
--- a/libs/libxx/libcxxmini/libxx_newa.cxx
+++ b/libs/libxx/libcxxmini/libxx_newa.cxx
@@ -22,6 +22,7 @@
 //***************************************************************************
 
 #include <nuttx/config.h>
+#include <assert.h>
 #include <cstddef>
 #include <debug.h>
 
@@ -76,6 +77,8 @@ FAR void *operator new[](std::size_t nbytes)
     }
 #endif
 
+  DEBUGASSERT(alloc != nullptr);
+
   // Return the allocated value
 
   return alloc;
@@ -83,13 +86,7 @@ FAR void *operator new[](std::size_t nbytes)
 
 FAR void *operator new[](std::size_t nbytes, FAR void *ptr)
 {
-
-#ifdef CONFIG_DEBUG_ERROR
-  if (ptr == 0)
-    {
-      _err("ERROR: Failed to placement new[]\n");
-    }
-#endif
+  DEBUGASSERT(ptr != nullptr);
 
   // Return the ptr pointer