diff --git a/modules/core/include/opencv2/core/base.hpp b/modules/core/include/opencv2/core/base.hpp
index a2e8dfdb0e500734be150d6100095783de501f88..a8a0b23e1225b648dd0b695efcd271836bbdfb6a 100644
--- a/modules/core/include/opencv2/core/base.hpp
+++ b/modules/core/include/opencv2/core/base.hpp
@@ -679,8 +679,8 @@ CV_EXPORTS void setUseIPP(bool flag);
 
 //! @} core_utils
 
-#include "opencv2/hal/neon_utils.hpp"
-
 } // cv
 
+#include "opencv2/hal/neon_utils.hpp"
+
 #endif //__OPENCV_CORE_BASE_HPP__
diff --git a/modules/hal/include/opencv2/hal/neon_utils.hpp b/modules/hal/include/opencv2/hal/neon_utils.hpp
index 21407a028b8d5b5fe2192bd2c663fef1f4e4a14f..6026777a6f8591891010335cde349ac4117df493 100644
--- a/modules/hal/include/opencv2/hal/neon_utils.hpp
+++ b/modules/hal/include/opencv2/hal/neon_utils.hpp
@@ -44,6 +44,8 @@
 
 #include "opencv2/hal/defs.h"
 
+namespace cv {
+
 #if CV_NEON
 
 inline int32x2_t cv_vrnd_s32_f32(float32x2_t v)
@@ -120,4 +122,6 @@ inline float32x2_t cv_vsqrt_f32(float32x2_t val)
 
 #endif
 
+}
+
 #endif // __OPENCV_HAL_NEON_UTILS_HPP__