diff --git a/src/plugins/webassembly/webassemblytoolchain.cpp b/src/plugins/webassembly/webassemblytoolchain.cpp
index 8f5fd8f16ca..ec4726aa6f7 100644
--- a/src/plugins/webassembly/webassemblytoolchain.cpp
+++ b/src/plugins/webassembly/webassemblytoolchain.cpp
@@ -128,18 +128,6 @@ WebAssemblyToolChain::WebAssemblyToolChain() :
     setTypeDisplayName(typeAndDisplayName);
 }
 
-bool WebAssemblyToolChain::fromMap(const QVariantMap &data)
-{
-    if (!ClangToolChain::fromMap(data))
-        return false;
-
-    // TODO: HACK: GccToolChain::fromMap() filters out abis with UnknownOS. Re-add it, here.
-    if (supportedAbis().isEmpty())
-        setSupportedAbis({toolChainAbi()});
-
-    return true;
-}
-
 WebAssemblyToolChainFactory::WebAssemblyToolChainFactory()
 {
     setDisplayName(tr("WebAssembly"));
diff --git a/src/plugins/webassembly/webassemblytoolchain.h b/src/plugins/webassembly/webassemblytoolchain.h
index ab0e703fe60..4693bc7a100 100644
--- a/src/plugins/webassembly/webassemblytoolchain.h
+++ b/src/plugins/webassembly/webassemblytoolchain.h
@@ -35,9 +35,6 @@ class WebAssemblyToolChain final : public ProjectExplorer::ClangToolChain
 public:
     void addToEnvironment(Utils::Environment &env) const override;
 
-protected:
-    bool fromMap(const QVariantMap &data) override;
-
 private:
     WebAssemblyToolChain();