diff --git a/include/armadillo_bits/config.hpp b/include/armadillo_bits/config.hpp
index 3548b91a..643f57f1 100644
--- a/include/armadillo_bits/config.hpp
+++ b/include/armadillo_bits/config.hpp
@@ -307,6 +307,10 @@
   #pragma message ("WARNING: use of ARMA_BLAS_LONG_LONG in conjunction with ARMA_USE_WRAPPER is not supported")
 #endif
 
+#if (defined(ARMA_BLAS_64BIT_INT) && defined(ARMA_USE_WRAPPER))
+  #pragma message ("WARNING: use of ARMA_BLAS_64BIT_INT in conjunction with ARMA_USE_WRAPPER is not supported")
+#endif
+
 // for compatibility with earlier versions of Armadillo
 #if defined(ARMA_BLAS_LONG) || defined(ARMA_BLAS_LONG_LONG)
   #undef  ARMA_BLAS_64BIT_INT
diff --git a/include/armadillo_bits/config.hpp.cmake b/include/armadillo_bits/config.hpp.cmake
index b2b9e6f0..ff5a0d9c 100644
--- a/include/armadillo_bits/config.hpp.cmake
+++ b/include/armadillo_bits/config.hpp.cmake
@@ -307,6 +307,10 @@
   #pragma message ("WARNING: use of ARMA_BLAS_LONG_LONG in conjunction with ARMA_USE_WRAPPER is not supported")
 #endif
 
+#if (defined(ARMA_BLAS_64BIT_INT) && defined(ARMA_USE_WRAPPER))
+  #pragma message ("WARNING: use of ARMA_BLAS_64BIT_INT in conjunction with ARMA_USE_WRAPPER is not supported")
+#endif
+
 // for compatibility with earlier versions of Armadillo
 #if defined(ARMA_BLAS_LONG) || defined(ARMA_BLAS_LONG_LONG)
   #undef  ARMA_BLAS_64BIT_INT