diff --git a/src/dfmt/formatter.d b/src/dfmt/formatter.d
index 669f3a3..3e4a763 100644
--- a/src/dfmt/formatter.d
+++ b/src/dfmt/formatter.d
@@ -154,8 +154,7 @@ private:
             {
                 immutable t = tokens[index].type;
                 if (t == tok!"identifier" || isStringLiteral(t)
-                        || isNumberLiteral(t) || t == tok!"characterLiteral"
-                        || isKeyword(t))
+                        || isNumberLiteral(t) || t == tok!"characterLiteral")
                     write(" ");
             }
         }
@@ -221,7 +220,7 @@ private:
         {
             writeToken();
             if (index < tokens.length && (currentIs(tok!"identifier")
-                    || isKeyword(current.type) || isBasicType(current.type) || currentIs(tok!"@")))
+                    || isBasicType(current.type) || currentIs(tok!"@")))
             {
                 write(" ");
             }
@@ -377,7 +376,7 @@ private:
             newline();
             writeToken(); // in/out/body
         }
-        else if (peekIsLiteralOrIdent() || peekIsBasicType() || peekIsKeyword())
+        else if (peekIsLiteralOrIdent() || peekIsBasicType())
         {
             writeToken();
             if (spaceAfterParens || parenDepth > 0)
@@ -676,6 +675,8 @@ private:
             break;
         case tok!"in":
         case tok!"is":
+            if (!peekBackIsOneOf(false, tok!"!", tok!"(", tok!","))
+                write(" ");
             writeToken();
             if (!currentIs(tok!"(") && !currentIs(tok!"{"))
                 write(" ");
diff --git a/tests/allman/issue0138.d.ref b/tests/allman/issue0138.d.ref
new file mode 100644
index 0000000..7dacc3a
--- /dev/null
+++ b/tests/allman/issue0138.d.ref
@@ -0,0 +1,8 @@
+unittest
+{
+    auto result = a[0] in aa;
+}
+
+void doStuff(in int a, in int b)
+{
+}
diff --git a/tests/issue0138.d b/tests/issue0138.d
new file mode 100644
index 0000000..d976fe6
--- /dev/null
+++ b/tests/issue0138.d
@@ -0,0 +1,8 @@
+unittest
+{
+	auto result = a[0] in aa;
+}
+
+void doStuff(in int a, in int b)
+{
+}
diff --git a/tests/otbs/issue0138.d.ref b/tests/otbs/issue0138.d.ref
new file mode 100644
index 0000000..b6abc82
--- /dev/null
+++ b/tests/otbs/issue0138.d.ref
@@ -0,0 +1,6 @@
+unittest {
+    auto result = a[0] in aa;
+}
+
+void doStuff(in int a, in int b) {
+}