--- a/c/test_c.py
+++ b/c/test_c.py
@@ -86,7 +86,6 @@
     if sys.platform.startswith("linux"):
         RTLD_NODELETE
         RTLD_NOLOAD
-        RTLD_DEEPBIND
 
 def test_new_primitive_type():
     py.test.raises(KeyError, new_primitive_type, "foo")
@@ -1237,8 +1236,7 @@
 def test_write_variable():
     ## FIXME: this test assumes glibc specific behavior, it's not compliant with C standard
     ## https://bugs.pypy.org/issue1643
-    if not sys.platform.startswith("linux"):
-        py.test.skip("untested")
+    py.test.skip("'stderr' is read-only in musl")
     BVoidP = new_pointer_type(new_void_type())
     ll = find_and_load_library('c')
     stderr = ll.read_variable(BVoidP, "stderr")
--- a/testing/cffi0/test_function.py
+++ b/testing/cffi0/test_function.py
@@ -166,7 +166,7 @@
                        b"hello, world!\n"
                        b"hello, world2!\n"
                        b"hello int 42 long 84 long long 168\n"
-                       b"hello (nil)\n")
+                       b"hello 0\n")
 
     def test_must_specify_type_of_vararg(self):
         ffi = FFI(backend=self.Backend())
@@ -249,8 +249,7 @@
         assert res == 5
 
     def test_write_variable(self):
-        if not sys.platform.startswith('linux'):
-            py.test.skip("probably no symbol 'stdout' in the lib")
+        py.test.skip("'stdout' is read-only in musl")
         ffi = FFI(backend=self.Backend())
         ffi.cdef("""
             void *stdout;
--- a/testing/cffi0/test_verify.py
+++ b/testing/cffi0/test_verify.py
@@ -1612,8 +1612,7 @@
     assert func() == 42
 
 def test_FILE_stored_in_stdout():
-    if not sys.platform.startswith('linux'):
-        py.test.skip("likely, we cannot assign to stdout")
+    py.test.skip("'stdout' is read-only in musl")
     ffi = FFI()
     ffi.cdef("int printf(const char *, ...); FILE *setstdout(FILE *);")
     lib = ffi.verify("""
--- a/testing/cffi1/test_verify1.py
+++ b/testing/cffi1/test_verify1.py
@@ -1576,8 +1576,7 @@
     assert func() == 42
 
 def test_FILE_stored_in_stdout():
-    if not sys.platform.startswith('linux'):
-        py.test.skip("likely, we cannot assign to stdout")
+    py.test.skip("'stdout' is read-only in musl")
     ffi = FFI()
     ffi.cdef("int printf(const char *, ...); FILE *setstdout(FILE *);")
     lib = ffi.verify("""