diff --git a/.gitignore b/.gitignore
index 7dbba4f1..f6e783e1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -111,6 +111,7 @@ eflags_nosync
 00opcode_uc_crash
 eflags_noset
 mem_map_large
+invalid_read_in_cpu_tb_exec
 
 
 #################
diff --git a/tests/regress/Makefile b/tests/regress/Makefile
index 759adeab..c0c653b6 100644
--- a/tests/regress/Makefile
+++ b/tests/regress/Makefile
@@ -16,6 +16,7 @@ TESTS += eflags_nosync
 TESTS += 00opcode_uc_crash
 TESTS += eflags_noset
 TESTS += mem_map_large
+TESTS += invalid_read_in_cpu_tb_exec
 
 all: $(TESTS)
 
diff --git a/tests/regress/invalid_read_in_cpu_tb_exec.c b/tests/regress/invalid_read_in_cpu_tb_exec.c
index 8e309caa..c05fc5b7 100644
--- a/tests/regress/invalid_read_in_cpu_tb_exec.c
+++ b/tests/regress/invalid_read_in_cpu_tb_exec.c
@@ -4,6 +4,11 @@ static void hook_block(uc_engine *uc, uint64_t address, uint32_t size, void *use
   printf("hook_block(…)\n");
 }
 
+/*
+ * Disassembly according to capstone:
+ *   add byte ptr [rip - 1], 0x30
+ *   jmp 0x1000000
+ */
 #define BINARY "\x80\x05\xff\xff\xff\xff\x30\xeb\xf7\x30"
 #define MEMORY_SIZE 2 * 1024 * 1024
 #define STARTING_ADDRESS 0x1000000