diff --git a/src/servers/app/drawing/DirectDriver.cpp b/src/servers/app/drawing/DirectDriver.cpp
index 6a981cfca9..68c981f471 100644
--- a/src/servers/app/drawing/DirectDriver.cpp
+++ b/src/servers/app/drawing/DirectDriver.cpp
@@ -439,14 +439,14 @@ status_t DirectDriver::SetDPMSMode(const uint32 &state)
 	return BScreen().SetDPMS(state);
 }
 
-uint32 DirectDriver::DPMSMode() const
+uint32 DirectDriver::DPMSMode()
 {
 	STRACE(("DirectDriver::DPMSMode\n"));
 	// This is a hack, but should do enough to be ok for our purposes
 	return BScreen().DPMSState();
 }
 
-uint32 DirectDriver::DPMSCapabilities() const
+uint32 DirectDriver::DPMSCapabilities()
 {
 	STRACE(("DirectDriver::DPMSCapabilities\n"));
 	
diff --git a/src/servers/app/drawing/DirectDriver.h b/src/servers/app/drawing/DirectDriver.h
index 47890e717a..30b945d222 100644
--- a/src/servers/app/drawing/DirectDriver.h
+++ b/src/servers/app/drawing/DirectDriver.h
@@ -135,8 +135,8 @@ public:
 	virtual	bool DumpToFile(const char *path);
 
 	virtual	status_t SetDPMSMode(const uint32 &state);
-	virtual	uint32 DPMSMode() const;
-	virtual	uint32 DPMSCapabilities() const;
+	virtual	uint32 DPMSMode();
+	virtual	uint32 DPMSCapabilities();
 	virtual	status_t GetDeviceInfo(accelerant_device_info *info);
 	virtual	status_t GetModeList(display_mode **mode_list, uint32 *count);
 	virtual	status_t GetPixelClockLimits(display_mode *mode, uint32 *low, uint32 *high);
diff --git a/src/servers/app/drawing/DisplayDriver.cpp b/src/servers/app/drawing/DisplayDriver.cpp
index b15c7babd3..ea24bfddfb 100644
--- a/src/servers/app/drawing/DisplayDriver.cpp
+++ b/src/servers/app/drawing/DisplayDriver.cpp
@@ -133,7 +133,7 @@ DisplayDriver::SetDPMSMode(const uint32 &state)
 	\return The driver's current DPMS state
 */
 uint32
-DisplayDriver::DPMSMode() const
+DisplayDriver::DPMSMode()
 {
 	return fDPMSState;
 }
@@ -146,7 +146,7 @@ DisplayDriver::DPMSMode() const
 	allows only B_DPMS_ON. Other possible states are B_DPMS_STANDBY, SUSPEND, and OFF.
 */
 uint32
-DisplayDriver::DPMSCapabilities() const
+DisplayDriver::DPMSCapabilities()
 {
 	return fDPMSCaps;
 }
diff --git a/src/servers/app/drawing/DisplayDriverPainter.cpp b/src/servers/app/drawing/DisplayDriverPainter.cpp
index 2cf23603db..368a0aa287 100644
--- a/src/servers/app/drawing/DisplayDriverPainter.cpp
+++ b/src/servers/app/drawing/DisplayDriverPainter.cpp
@@ -917,7 +917,7 @@ DisplayDriverPainter::SetDPMSMode(const uint32 &state)
 
 // DPMSMode
 uint32
-DisplayDriverPainter::DPMSMode() const
+DisplayDriverPainter::DPMSMode()
 {
 	uint32 mode = 0;
 	if (Lock()) {
@@ -929,7 +929,7 @@ DisplayDriverPainter::DPMSMode() const
 
 // DPMSCapabilities
 uint32
-DisplayDriverPainter::DPMSCapabilities() const
+DisplayDriverPainter::DPMSCapabilities()
 {
 	uint32 caps = 0;
 	if (Lock()) {
diff --git a/src/servers/app/drawing/DisplayDriverPainter.h b/src/servers/app/drawing/DisplayDriverPainter.h
index 7a23271450..06a867df44 100644
--- a/src/servers/app/drawing/DisplayDriverPainter.h
+++ b/src/servers/app/drawing/DisplayDriverPainter.h
@@ -243,8 +243,8 @@ class DisplayDriverPainter : public DisplayDriver {
 												const DrawData *d);
 
 	virtual status_t			SetDPMSMode(const uint32 &state);
-	virtual uint32				DPMSMode() const;
-	virtual uint32				DPMSCapabilities() const;
+	virtual uint32				DPMSMode();
+	virtual uint32				DPMSCapabilities();
 	virtual status_t			GetDeviceInfo(accelerant_device_info *info);
 
 	virtual status_t			GetModeList(display_mode **mode_list,
diff --git a/src/servers/app/drawing/ViewDriver.cpp b/src/servers/app/drawing/ViewDriver.cpp
index 9d8a3231bc..b929fd9104 100644
--- a/src/servers/app/drawing/ViewDriver.cpp
+++ b/src/servers/app/drawing/ViewDriver.cpp
@@ -679,13 +679,13 @@ status_t ViewDriver::SetDPMSMode(const uint32 &state)
 	return BScreen().SetDPMS(state);
 }
 
-uint32 ViewDriver::DPMSMode() const
+uint32 ViewDriver::DPMSMode()
 {
 	// See note for SetDPMSMode if there are questions
 	return BScreen().DPMSState();
 }
 
-uint32 ViewDriver::DPMSCapabilities() const
+uint32 ViewDriver::DPMSCapabilities()
 {
 	// See note for SetDPMSMode if there are questions
 	return BScreen().DPMSCapabilites();
diff --git a/src/servers/app/drawing/ViewDriver.h b/src/servers/app/drawing/ViewDriver.h
index 8ab7e3b8b2..afd161df86 100644
--- a/src/servers/app/drawing/ViewDriver.h
+++ b/src/servers/app/drawing/ViewDriver.h
@@ -121,8 +121,8 @@ public:
 			VDWindow			*screenwin;
 
 	virtual	status_t			SetDPMSMode(const uint32 &state);
-	virtual	uint32				DPMSMode() const;
-	virtual	uint32				DPMSCapabilities() const;
+	virtual	uint32				DPMSMode();
+	virtual	uint32				DPMSCapabilities();
 	virtual	status_t			GetDeviceInfo(accelerant_device_info *info);
 	virtual	status_t			GetModeList(display_mode **mode_list, uint32 *count);
 	virtual	status_t			GetPixelClockLimits(display_mode *mode, uint32 *low, uint32 *high);