diff --git a/backends/PalmOS/Src/be_base.cpp b/backends/PalmOS/Src/be_base.cpp
index 5e81a18d6d1..26521adb166 100755
--- a/backends/PalmOS/Src/be_base.cpp
+++ b/backends/PalmOS/Src/be_base.cpp
@@ -70,7 +70,7 @@ OSystem_PalmBase::OSystem_PalmBase() {
 
 void OSystem_PalmBase::initBackend() {
 	if (gVars->autoSave != -1)
-		ConfMan.set("autosave_period", gVars->autoSave);
+		ConfMan.setInt("autosave_period", gVars->autoSave);
 
 	_keyMouse.bitUp		= keyBitPageUp;
 	_keyMouse.bitDown	= keyBitPageDown;
diff --git a/backends/PalmOS/Src/os5_sound.cpp b/backends/PalmOS/Src/os5_sound.cpp
index 9605a1d544b..4bdded13e76 100755
--- a/backends/PalmOS/Src/os5_sound.cpp
+++ b/backends/PalmOS/Src/os5_sound.cpp
@@ -68,8 +68,8 @@ bool OSystem_PalmOS5::setSoundCallback(SoundProc proc, void *param) {
 
 	if (!_sound.active) {
 		if (gVars->fmQuality != FM_QUALITY_INI) {
-			ConfMan.set("FM_medium_quality", (gVars->fmQuality == FM_QUALITY_MED));
-			ConfMan.set("FM_high_quality", (gVars->fmQuality == FM_QUALITY_HI));
+			ConfMan.setBool("FM_medium_quality", (gVars->fmQuality == FM_QUALITY_MED));
+			ConfMan.setBool("FM_high_quality", (gVars->fmQuality == FM_QUALITY_HI));
 		}
 
 #if defined (COMPILE_OS5)