diff --git a/c/test_programs/issue_175.c b/c/test_programs/issue_175.c
index 783cf8d5..9d6c7ba1 100644
--- a/c/test_programs/issue_175.c
+++ b/c/test_programs/issue_175.c
@@ -5,6 +5,9 @@
 //
 // However, when compiled with "qvc issue_175.c" the program incorrectly outputs
 // x=989, v=96
+//
+// Details:
+// https://github.com/sy2002/QNICE-FPGA/issues/175
 
 #include <stdio.h>
 
diff --git a/c/test_programs/issue_177.c b/c/test_programs/issue_177.c
index 14a4617b..950466aa 100644
--- a/c/test_programs/issue_177.c
+++ b/c/test_programs/issue_177.c
@@ -1,6 +1,9 @@
 // This is a small test program to test Issue #177.
 // When compiled without optimization, it generates incorrect assembly.
 // When compiled with optimization, it generates correct assembly.
+//
+// Details:
+// https://github.com/sy2002/QNICE-FPGA/issues/177
 
 #include <sysdef.h>
 
diff --git a/c/test_programs/issue_75.c b/c/test_programs/issue_75.c
index 0856ee65..abded2e9 100644
--- a/c/test_programs/issue_75.c
+++ b/c/test_programs/issue_75.c
@@ -9,6 +9,9 @@
    * qvc test.c -O1
    * qvc test.c -O2
    * qvc test.c -O3
+
+   Details:
+   https://github.com/sy2002/QNICE-FPGA/issues/75
 */
 
 #include <stdio.h>
diff --git a/c/test_programs/issue_76.c b/c/test_programs/issue_76.c
index 50c668e0..be5ea38a 100644
--- a/c/test_programs/issue_76.c
+++ b/c/test_programs/issue_76.c
@@ -3,6 +3,9 @@
    Expected result:  r=565, res=190
 
    Fixed. So the expected result should be shown.
+
+   Details:
+   https://github.com/sy2002/QNICE-FPGA/issues/76
 */
 
 #include <stdio.h>