diff --git a/examples/stl_write_file.c b/examples/stl_write_file.c
index 96530f3..61fd73b 100644
--- a/examples/stl_write_file.c
+++ b/examples/stl_write_file.c
@@ -28,9 +28,9 @@ static void my_3d_mesh__get_triangle(
     struct gmio_stl_coords* tri_vertices = &triangle->v1;
     int i;
     for (i = 0; i < 3; ++i) {
-        tri_vertices[i].x = my_tri->vertex[i].coords[0];
-        tri_vertices[i].y = my_tri->vertex[i].coords[1];
-        tri_vertices[i].z = my_tri->vertex[i].coords[2];
+        tri_vertices[i].x = (float)my_tri->vertex[i].coords[0];
+        tri_vertices[i].y = (float)my_tri->vertex[i].coords[1];
+        tri_vertices[i].z = (float)my_tri->vertex[i].coords[2];
     }
     gmio_stl_triangle_compute_normal(triangle);
 }
diff --git a/src/gmio_core/internal/c99_stdio_compat.h b/src/gmio_core/internal/c99_stdio_compat.h
index 5df965f..450c794 100644
--- a/src/gmio_core/internal/c99_stdio_compat.h
+++ b/src/gmio_core/internal/c99_stdio_compat.h
@@ -37,6 +37,7 @@
 GMIO_INLINE int gmio_vsnprintf(
         char* buf, size_t bufn, const char* fmt, va_list args)
 {
+    GMIO_UNUSED(bufn);
     return vsprintf(buf, fmt, args);
 }
 #endif
diff --git a/src/gmio_core/internal/eblake_str_two_way.h b/src/gmio_core/internal/eblake_str_two_way.h
index 2311aaf..c081958 100644
--- a/src/gmio_core/internal/eblake_str_two_way.h
+++ b/src/gmio_core/internal/eblake_str_two_way.h
@@ -216,6 +216,7 @@ critical_factorization (const unsigned char *needle, size_t needle_len,
   return max_suffix_rev + 1;
 }
 
+GMIO_PRAGMA_MSVC_WARNING_PUSH_AND_DISABLE(4706)
 /* Return the first location of non-empty NEEDLE within HAYSTACK, or
    NULL.  HAYSTACK_LEN is the minimum known length of HAYSTACK.  This
    method is optimized for NEEDLE_LEN < LONG_NEEDLE_THRESHOLD.
@@ -522,6 +523,7 @@ two_way_long_needle (const unsigned char *haystack, size_t haystack_len,
     }
   return NULL;
 }
+GMIO_PRAGMA_MSVC_WARNING_POP()
 
 #undef AVAILABLE
 #undef CANON_ELEMENT
diff --git a/tests/test_core_internal.c b/tests/test_core_internal.c
index 6b3d899..3045002 100644
--- a/tests/test_core_internal.c
+++ b/tests/test_core_internal.c
@@ -274,7 +274,7 @@ const char* test_internal__string_utils()
     UTEST_ASSERT(gmio_ascii_isspace('\n'));
     UTEST_ASSERT(gmio_ascii_isspace('\r'));
 
-    for (c = 0; c >= 0 && c <= 127; ++c) {
+    for (c = 0; 0 <= c && c <= 127; ++c) {
         if (65 <= c && c <= 90) {
             UTEST_ASSERT(gmio_ascii_isupper(c));
         }