diff --git a/main.cc b/main.cc
index 4558b5c..4ac0054 100644
--- a/main.cc
+++ b/main.cc
@@ -209,6 +209,8 @@ void T_Main::makeUI( )
 	if ( BeginMainMenuBar( ) ) {
 		if ( BeginMenu( "File" ) ) {
 			if ( MenuItem( "Save curves" , "C-s" , false , sync.curvesModified( ) ) ) {
+				// FIXME: confirmation dialog if file changed
+				sync.saveCurves( );
 			}
 			if ( MenuItem( "Reload curves" , "C-R" , false , sync.curvesModified( ) ) ) {
 				// FIXME: confirmation dialog
diff --git a/sync.cc b/sync.cc
index 8337752..2a4e0ec 100644
--- a/sync.cc
+++ b/sync.cc
@@ -190,6 +190,25 @@ void T_SyncTime::setDuration(
 }
 
 
+/*= T_SyncSegment ============================================================*/
+
+M_LSHIFT_OP( T_StringBuilder , T_SyncSegment::E_SegmentType )
+{
+	switch ( value ) {
+	    case T_SyncSegment::LINEAR:
+		obj << "linear";
+		break;
+	    case T_SyncSegment::RAMP:
+		obj << "ramp";
+		break;
+	    case T_SyncSegment::SMOOTH:
+		obj << "smooth";
+		break;
+	}
+	return obj;
+}
+
+
 /*= T_SyncCurves =============================================================*/
 
 int32_t T_SyncCurves::indexOf(
@@ -623,6 +642,10 @@ T_SyncCurve const* T_SyncManager::getCurve(
 
 void T_SyncManager::curvesChanged_( )
 {
+	if ( saving_ ) {
+		saving_ = false;
+		return;
+	}
 	if ( modified_ ) {
 		fileChanged_ = true;
 	} else {
@@ -682,6 +705,41 @@ bool T_SyncManager::loadCurves(
 	return true;
 }
 
+bool T_SyncManager::saveCurves( )
+{
+	T_StringBuilder sb;
+	sb << "(duration " << time_.uDuration << ' ' << time_.iDuration
+		<< ")\n";
+	for ( auto const& curve : curves_.curves.values( ) ) {
+		sb << "\n(" << curve.name << '\n';
+		for ( auto const& s : curve.segments ) {
+			sb << "\t(segment " << s.type << "\n\t\t(values";
+			for ( auto v : s.values ) {
+				sb << ' ' << v;
+			}
+			sb << ")\n\t\t(durations";
+			for ( auto d : s.durations ) {
+				sb << ' ' << d;
+			}
+			sb << ")\n\t)\n";
+		}
+		sb << ")\n";
+	}
+
+	saving_ = true;
+	printf( "Saving curves...\n" );
+	try {
+		T_File out{ "curves.srd" , E_FileMode::OVERWRITE };
+		out.write( sb.data( ) , sb.size( ) );
+	} catch ( ebcl::X_StreamError const& e ) {
+		printf( "... ERR %s\n" , e.what( ) );
+		return false;
+	}
+	printf( "... OK\n" );
+	fileChanged_ = modified_ = false;
+	return true;
+}
+
 void T_SyncManager::addReloadUndoData_(
 		void* const data ) const noexcept
 {
diff --git a/sync.hh b/sync.hh
index ebfe2a8..af3bfca 100644
--- a/sync.hh
+++ b/sync.hh
@@ -43,6 +43,7 @@ struct T_SyncSegment
 	T_Array< float > values;
 	T_Array< uint32_t > durations;	// n(values) - 1 items
 };
+M_LSHIFT_OP( T_StringBuilder , T_SyncSegment::E_SegmentType );
 
 // An input curve
 struct T_SyncCurve
@@ -358,6 +359,7 @@ struct T_SyncManager : public virtual A_MouseCtrl
 		{ return fileChanged_; }
 
 	bool loadCurves( bool undoable = true );
+	bool saveCurves( );
 
     private:
 	void curvesChanged_( );
@@ -419,6 +421,7 @@ struct T_SyncManager : public virtual A_MouseCtrl
     private:
 	ebcl::T_SRDParserConfig pConfig_;		// Parser config for curves
 	T_WatchedFiles watcher_;			// Curves file watcher
+	bool saving_{ false };				// True if file is being saved
 	bool modified_;					// Locally modified
 	bool fileChanged_;				// File modified