diff --git a/modules/core/include/opencv2/core/cvdef.h b/modules/core/include/opencv2/core/cvdef.h
index b6879ff5a5..03f65ad328 100644
--- a/modules/core/include/opencv2/core/cvdef.h
+++ b/modules/core/include/opencv2/core/cvdef.h
@@ -844,7 +844,7 @@ protected:
     float16_t() : w(0) {}
     explicit float16_t(float x)
     {
-    #if CV_FP16
+    #if CV_FP16 && CV_AVX2
         __m128 v = _mm_load_ss(&x);
         w = (ushort)_mm_cvtsi128_si32(_mm_cvtps_ph(v, 0));
     #else
@@ -875,7 +875,7 @@ protected:
 
     operator float() const
     {
-    #if CV_FP16
+    #if CV_FP16 && CV_AVX2
         float f;
         _mm_store_ss(&f, _mm_cvtph_ps(_mm_cvtsi32_si128(w)));
         return f;