diff --git a/common/log.h b/common/log.h
index 201c87a..f38e80e 100644
--- a/common/log.h
+++ b/common/log.h
@@ -99,6 +99,12 @@ enum { spice_extra_checks = 1 };
 enum { spice_extra_checks = 0 };
 #endif
 
+#define spice_extra_assert(x) G_STMT_START {            \
+    if (!spice_extra_checks || G_LIKELY(x)) { } else {  \
+        spice_error("assertion `%s' failed", #x);       \
+    }                                                   \
+} G_STMT_END
+
 SPICE_END_DECLS
 
 #endif // H_SPICE_COMMON_LOG
diff --git a/tests/test-logging.c b/tests/test-logging.c
index 22afe1f..d151990 100644
--- a/tests/test-logging.c
+++ b/tests/test-logging.c
@@ -267,6 +267,30 @@ static void test_spice_g_messages_debug_all(void)
     g_test_trap_assert_stderr("*g_message\n*other_message\n");
 }
 
+/* Checks that spice_assert() aborts if condition fails */
+static void test_spice_assert(void)
+{
+    if (g_test_subprocess()) {
+        spice_assert(1 == 2);
+        return;
+    }
+    g_test_trap_subprocess(NULL, 0, 0);
+    g_test_trap_assert_failed();
+    g_test_trap_assert_stderr("*assertion `1 == 2' failed*");
+}
+
+/* Checks that spice_extra_assert() aborts if condition fails */
+static void test_spice_extra_assert(void)
+{
+    if (g_test_subprocess()) {
+        spice_extra_assert(1 == 2);
+        return;
+    }
+    g_test_trap_subprocess(NULL, 0, 0);
+    g_test_trap_assert_failed();
+    g_test_trap_assert_stderr("*assertion `1 == 2' failed*");
+}
+
 static void handle_sigabrt(int sig G_GNUC_UNUSED)
 {
     _Exit(1);
@@ -298,6 +322,10 @@ int main(int argc, char **argv)
     g_test_add_func("/spice-common/spice-fatal-return-if-fail", test_spice_fatal_return_if_fail);
     g_test_add_func("/spice-common/spice-non-fatal-greturn-if-fail", test_spice_non_fatal_g_return_if_fail);
     g_test_add_func("/spice-common/spice-fatal-warning", test_spice_fatal_warning);
+    g_test_add_func("/spice-common/spice-assert", test_spice_assert);
+    if (spice_extra_checks) {
+        g_test_add_func("/spice-common/spice-extra-assert", test_spice_extra_assert);
+    }
 
     return g_test_run();
 }