diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 1404f1546..4a13bcc2c 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -15,6 +15,14 @@
   * Build LAPACKE: C interface to LAPACK
   * Improve the windows build.
 
+## Previous Developers
+
+* Chen Shaohu <huhumartinwar@gmail.com>
+  * Optimize GEMV on the Loongson 3A processor. 
+
+* Luo Wen
+  * Intern. Test Level-2 BLAS.
+
 ## Contributors
 
 In chronological order:
diff --git a/f_check b/f_check
index 83587e609..d7c0b2328 100644
--- a/f_check
+++ b/f_check
@@ -24,7 +24,7 @@ $compiler = "" if $compiler eq "f77";
 
 if ($compiler eq "") {
 
-    @lists = ("f77", "g77", "g95", "gfortran", "frt", "fort", "openf90", "openf95",
+    @lists = ("g77", "g95", "gfortran", "frt", "fort", "openf90", "openf95",
 	      "sunf77", "sunf90", "sunf95",
               "xlf95", "xlf90", "xlf", 
               "ppuf77", "ppuf95", "ppuf90", "ppuxlf", 
diff --git a/interface/trtri.c b/interface/trtri.c
index 75416529a..0564bc183 100644
--- a/interface/trtri.c
+++ b/interface/trtri.c
@@ -138,7 +138,7 @@ int NAME(char *UPLO, char *DIAG, blasint *N, FLOAT *a, blasint *ldA, blasint *In
     // call dtrtri from lapack for a walk around.
     if(uplo==0){
       dtrtri_lapack_(UPLO, DIAG, N, a, ldA, Info);
-      return;
+      return 0;
     }
 #endif