diff --git a/src/arch/arm/system.cc b/src/arch/arm/system.cc
index a70c63c9f5..d401339168 100644
--- a/src/arch/arm/system.cc
+++ b/src/arch/arm/system.cc
@@ -180,14 +180,6 @@ ArmSystem::initState()
     }
 }
 
-ArmSystem *
-ArmSystem::getArmSystem(System *sys)
-{
-    ArmSystem *a_sys = dynamic_cast<ArmSystem *>(sys);
-    assert(a_sys);
-    return a_sys;
-}
-
 ArmSystem*
 ArmSystem::getArmSystem(ThreadContext *tc)
 {
diff --git a/src/arch/arm/system.hh b/src/arch/arm/system.hh
index 9f27fad925..26b417ed78 100644
--- a/src/arch/arm/system.hh
+++ b/src/arch/arm/system.hh
@@ -270,13 +270,6 @@ class ArmSystem : public System
     /** Is Arm Semihosting support enabled? */
     bool haveSemihosting() const { return semihosting != nullptr; }
 
-    /**
-     * Casts the provided System object into a valid ArmSystem, it fails
-     * otherwise.
-     * @param sys System object to cast
-     */
-    static ArmSystem *getArmSystem(System *sys);
-
     /**
      * Returns a valid ArmSystem pointer if using ARM ISA, it fails
      * otherwise.