diff --git a/libr/bin/mangling/swift-sd.c b/libr/bin/mangling/swift-sd.c
index 25eece8eea934d..6b1c7b8b504f33 100644
--- a/libr/bin/mangling/swift-sd.c
+++ b/libr/bin/mangling/swift-sd.c
@@ -8,7 +8,7 @@
 // R2R db/tools/rabin2
 
 // set this to true for debugging purposes
-#define USE_THIS_CODE 1
+#define USE_THIS_CODE 0
 
 static R_TH_LOCAL int have_swift_demangle = -1;
 #if R2__UNIX__
diff --git a/test/db/archos/darwin-x86_64/swift b/test/db/archos/darwin-x86_64/swift
new file mode 100644
index 00000000000000..ca20d8d2b5bc71
--- /dev/null
+++ b/test/db/archos/darwin-x86_64/swift
@@ -0,0 +1,43 @@
+NAME=swift demangling trylib false
+FILE=-
+CMDS=<<EOF
+%RABIN2_SWIFTLIB=0
+!!rabin2 -D swift _TFC4test7MyClass9calculatefS0_FT1xSi_Si
+EOF
+EXPECT=<<EOF
+Swift.test.MyClass.calculate (self) -> (): , ) ()
+EOF
+RUN
+
+NAME=swift demangling trylib true
+FILE=-
+CMDS=<<EOF
+%RABIN2_SWIFTLIB=1
+!!rabin2 -D swift _TFC4test7MyClass9calculatefS0_FT1xSi_Si
+EOF
+EXPECT=<<EOF
+test.MyClass.calculate(test.MyClass) -> (x: Swift.Int) -> Swift.Int
+EOF
+RUN
+
+NAME=swift demangling config var internal
+FILE=-
+CMDS=<<EOF
+-e bin.demangle.trylib=false
+iD swift _TFC4test7MyClass9calculatefS0_FT1xSi_Si
+EOF
+EXPECT=<<EOF
+Swift.test.MyClass.calculate (self) -> (): , ) ()
+EOF
+RUN
+
+NAME=swift demangling config var system library
+FILE=-
+CMDS=<<EOF
+-e bin.demangle.trylib=true
+iD swift _TFC4test7MyClass9calculatefS0_FT1xSi_Si
+EOF
+EXPECT=<<EOF
+test.MyClass.calculate(test.MyClass) -> (x: Swift.Int) -> Swift.Int
+EOF
+RUN