diff --git a/bindings/cxx/ConfigKey_methods.cpp b/bindings/cxx/ConfigKey_methods.cpp
index 54af62e8..be70b06d 100644
--- a/bindings/cxx/ConfigKey_methods.cpp
+++ b/bindings/cxx/ConfigKey_methods.cpp
@@ -70,12 +70,12 @@ static inline double stod( const std::string& str )
 }
 #endif
 
-Glib::VariantBase ConfigKey::parse_string(string value) const
+Glib::VariantBase ConfigKey::parse_string(string value, enum sr_datatype dt)
 {
 	GVariant *variant;
 	uint64_t p, q;
 
-	switch (data_type()->id())
+	switch (dt)
 	{
 		case SR_T_UINT64:
 			check(sr_parse_sizestring(value.c_str(), &p));
@@ -116,3 +116,8 @@ Glib::VariantBase ConfigKey::parse_string(string value) const
 	return Glib::VariantBase(variant, false);
 }
 
+Glib::VariantBase ConfigKey::parse_string(string value) const
+{
+	enum sr_datatype dt = (enum sr_datatype)(data_type()->id());
+	return parse_string(value, dt);
+}
diff --git a/bindings/cxx/ConfigKey_methods.hpp b/bindings/cxx/ConfigKey_methods.hpp
index f759cc4e..bbc7ce81 100644
--- a/bindings/cxx/ConfigKey_methods.hpp
+++ b/bindings/cxx/ConfigKey_methods.hpp
@@ -7,4 +7,5 @@
     /** Get configuration key by string identifier. */
     static const ConfigKey *get_by_identifier(string identifier);
     /** Parse a string argument into the appropriate type for this key. */
+    static Glib::VariantBase parse_string(string value, enum sr_datatype dt);
     Glib::VariantBase parse_string(string value) const;
diff --git a/bindings/cxx/classes.cpp b/bindings/cxx/classes.cpp
index e4340fdf..d292be30 100644
--- a/bindings/cxx/classes.cpp
+++ b/bindings/cxx/classes.cpp
@@ -1483,6 +1483,28 @@ vector<Glib::VariantBase> Option::values() const
 	return result;
 }
 
+Glib::VariantBase Option::parse_string(string value)
+{
+	enum sr_datatype dt;
+	Glib::VariantBase dflt = default_value();
+	GVariant *tmpl = dflt.gobj();
+
+	if (g_variant_is_of_type(tmpl, G_VARIANT_TYPE_UINT64)) {
+		dt = SR_T_UINT64;
+	} else if (g_variant_is_of_type(tmpl, G_VARIANT_TYPE_STRING)) {
+		dt = SR_T_STRING;
+	} else if (g_variant_is_of_type(tmpl, G_VARIANT_TYPE_BOOLEAN)) {
+		dt = SR_T_BOOL;
+	} else if (g_variant_is_of_type(tmpl, G_VARIANT_TYPE_DOUBLE)) {
+		dt = SR_T_FLOAT;
+	} else if (g_variant_is_of_type(tmpl, G_VARIANT_TYPE_INT32)) {
+		dt = SR_T_INT32;
+	} else {
+		throw Error(SR_ERR_BUG);
+	}
+	return ConfigKey::parse_string(value, dt);
+}
+
 OutputFormat::OutputFormat(const struct sr_output_module *structure) :
 	_structure(structure)
 {
diff --git a/bindings/cxx/include/libsigrokcxx/libsigrokcxx.hpp b/bindings/cxx/include/libsigrokcxx/libsigrokcxx.hpp
index b1ab7a5b..00a19b33 100644
--- a/bindings/cxx/include/libsigrokcxx/libsigrokcxx.hpp
+++ b/bindings/cxx/include/libsigrokcxx/libsigrokcxx.hpp
@@ -917,6 +917,8 @@ public:
 	Glib::VariantBase default_value() const;
 	/** Possible values for this option, if a limited set. */
 	vector<Glib::VariantBase> values() const;
+	/** Parse a string argument into the appropriate type for this option. */
+	Glib::VariantBase parse_string(string value);
 private:
 	Option(const struct sr_option *structure,
 		shared_ptr<const struct sr_option *> structure_array);