diff --git a/src/ext/tinytest_macros.h b/src/ext/tinytest_macros.h
index db2dfcbe6..c3728d1fd 100644
--- a/src/ext/tinytest_macros.h
+++ b/src/ext/tinytest_macros.h
@@ -113,8 +113,8 @@
 #define tt_assert_test_fmt_type(a,b,str_test,type,test,printf_type,printf_fmt, \
     setup_block,cleanup_block,die_on_fail)				\
 	TT_STMT_BEGIN							\
-	type val1_ = (type)(a);						\
-	type val2_ = (type)(b);						\
+	type val1_ = (a);						\
+	type val2_ = (b);						\
 	int tt_status_ = (test);					\
 	if (!tt_status_ || tinytest_get_verbosity_()>1)	{		\
 		printf_type print_;					\
@@ -163,7 +163,7 @@
 	    (val1_ op val2_),"%lu",TT_EXIT_TEST_FUNCTION)
 
 #define tt_ptr_op(a,op,b)						\
-	tt_assert_test_type(a,b,#a" "#op" "#b,void*,			\
+	tt_assert_test_type(a,b,#a" "#op" "#b,const void*,              \
 	    (val1_ op val2_),"%p",TT_EXIT_TEST_FUNCTION)
 
 #define tt_str_op(a,op,b)						\
@@ -173,7 +173,7 @@
 
 #define tt_mem_op(expr1, op, expr2, len)                                \
   tt_assert_test_fmt_type(expr1,expr2,#expr1" "#op" "#expr2,            \
-			  const char *,                                 \
+			  const void *,                                 \
 			  (val1_ && val2_ && memcmp(val1_, val2_, len) op 0), \
 			  char *, "%s",					\
 			  { print_ = tinytest_format_hex_(value_, (len)); }, \
@@ -189,7 +189,7 @@
 	    (val1_ op val2_),"%lu",(void)0)
 
 #define tt_want_ptr_op(a,op,b)						\
-	tt_assert_test_type(a,b,#a" "#op" "#b,void*,			\
+  tt_assert_test_type(a,b,#a" "#op" "#b,const void*,			\
 	    (val1_ op val2_),"%p",(void)0)
 
 #define tt_want_str_op(a,op,b)						\
diff --git a/src/test/test_buffers.c b/src/test/test_buffers.c
index cb78a4bb5..78b3aead6 100644
--- a/src/test/test_buffers.c
+++ b/src/test/test_buffers.c
@@ -222,7 +222,7 @@ test_buffer_pullup(void *arg)
   buf_pullup(buf, 16, 1);
   buf_get_first_chunk_data(buf, &cp, &sz);
   tt_ptr_op(cp, ==, NULL);
-  tt_ptr_op(sz, ==, 0);
+  tt_uint_op(sz, ==, 0);
 
   /* Let's make sure nothing got allocated */
   tt_int_op(buf_get_total_allocation(), ==, 0);
diff --git a/src/test/test_circuitlist.c b/src/test/test_circuitlist.c
index 7b7d4153e..b19edd1fd 100644
--- a/src/test/test_circuitlist.c
+++ b/src/test/test_circuitlist.c
@@ -53,7 +53,7 @@ circuitmux_detach_mock(circuitmux_t *cmux, circuit_t *circ)
     tt_int_op(cam.ncalls, ==, 1);                \
     tt_ptr_op(cam.cmux, ==, (mux_));             \
     tt_ptr_op(cam.circ, ==, (circ_));            \
-    tt_ptr_op(cam.dir, ==, (dir_));              \
+    tt_int_op(cam.dir, ==, (dir_));              \
     memset(&cam, 0, sizeof(cam));                \
   } while (0)
 
diff --git a/src/test/test_extorport.c b/src/test/test_extorport.c
index d47792fdb..64ed24eee 100644
--- a/src/test/test_extorport.c
+++ b/src/test/test_extorport.c
@@ -338,7 +338,7 @@ test_ext_or_cookie_auth_testvec(void *arg)
             handle_client_auth_nonce(client_nonce, 32, &client_hash, &reply,
                                      &reply_len));
   tt_ptr_op(reply, !=, NULL );
-  tt_ptr_op(reply_len, ==, 64);
+  tt_uint_op(reply_len, ==, 64);
   test_memeq(reply+32, "te road There is always another ", 32);
   /* HMACSHA256("Gliding wrapt in a brown mantle,"
    *     "ExtORPort authentication server-to-client hash"