diff --git a/cmake/define.inc b/cmake/define.inc
index 5069fb0512a29302188b61a0318256c9f7d5f399..84df6f54055cff0b6fe7f1820d46958787ca3c46 100755
--- a/cmake/define.inc
+++ b/cmake/define.inc
@@ -118,7 +118,7 @@ IF (TD_DARWIN_64)
   ADD_DEFINITIONS(-DDARWIN)
   ADD_DEFINITIONS(-D_REENTRANT -D__USE_POSIX -D_LIBC_REENTRANT)
   ADD_DEFINITIONS(-DUSE_LIBICONV)
-  SET(COMMON_FLAGS "-std=gnu99 -Wall -Werror -Wno-self-assign -Wno-missing-braces -fPIC -g -msse4.2 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
+  SET(COMMON_FLAGS "-std=gnu99 -Wall -Werror -Wno-missing-braces -fPIC -g -msse4.2 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
   SET(DEBUG_FLAGS "-O0 -DDEBUG")
   SET(RELEASE_FLAGS "-O0")
 ENDIF ()
diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index f9f72f9174549818cf229e48cc4226ebb3410d00..165ee7acc536b9bbcc41e9d17271ae2c5babef31 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -5271,7 +5271,7 @@ static void doUpdateSqlFunctionForColPrj(SQueryInfo* pQueryInfo) {
       }
 
       assert(qualifiedCol);
-      qualifiedCol = qualifiedCol;
+      (void) qualifiedCol;
     }
   }
 }
diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index 636fccd3a0860a85629dbf36282fd02c224ecfef..a78bedb3d96358fb569680631266da18a34446d6 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -1788,7 +1788,7 @@ static void doSetSqlExprAndResultFieldInfo(SQueryInfo* pQueryInfo, SQueryInfo* p
     }
 
     assert(matched);
-    matched = matched;
+    (void)matched;
   }
 
   tscFieldInfoUpdateOffset(pNewQueryInfo);