diff --git a/Source/DOH/base.c b/Source/DOH/base.c
index cfbd2bdc4..db37e147b 100644
--- a/Source/DOH/base.c
+++ b/Source/DOH/base.c
@@ -259,7 +259,7 @@ int DohEqual(const DOH *obj1, const DOH *obj2) {
 
     if (!b1info) {
       return obj1 == obj2;
-    } else if ((b1info == b2info)) {
+    } else if (b1info == b2info) {
       return b1info->doh_equal ? (b1info->doh_equal) (b1, b2) : (b1info->doh_cmp ? (b1info->doh_cmp) (b1, b2) == 0 : (b1 == b2));
     } else {
       return 0;
diff --git a/Source/Modules/d.cxx b/Source/Modules/d.cxx
index bf4d15987..bc51cf5ed 100644
--- a/Source/Modules/d.cxx
+++ b/Source/Modules/d.cxx
@@ -4602,7 +4602,7 @@ private:
     co = c + Len(nspace);
 
     while (*c && (c != co)) {
-      if ((*c == '.')) {
+      if (*c == '.') {
 	break;
       }
       c++;
diff --git a/Source/Preprocessor/expr.c b/Source/Preprocessor/expr.c
index 3e3f39480..e7470378d 100644
--- a/Source/Preprocessor/expr.c
+++ b/Source/Preprocessor/expr.c
@@ -298,16 +298,16 @@ int Preprocessor_expr(DOH *s, int *error) {
 	stack[sp++].op = EXPR_OP;
 	stack[sp].op = EXPR_TOP;
 	stack[sp].svalue = 0;
-      } else if ((token == SWIG_TOKEN_LPAREN)) {
+      } else if (token == SWIG_TOKEN_LPAREN) {
 	stack[sp++].op = EXPR_GROUP;
 	stack[sp].op = EXPR_TOP;
 	stack[sp].value = 0;
 	stack[sp].svalue = 0;
       } else if (token == SWIG_TOKEN_ENDLINE) {
-      } else if ((token == SWIG_TOKEN_STRING)) {
+      } else if (token == SWIG_TOKEN_STRING) {
 	stack[sp].svalue = NewString(Scanner_text(scan));
 	stack[sp].op = EXPR_VALUE;
-      } else if ((token == SWIG_TOKEN_ID)) {
+      } else if (token == SWIG_TOKEN_ID) {
 	stack[sp].value = 0;
 	stack[sp].svalue = 0;
 	stack[sp].op = EXPR_VALUE;