diff --git a/src/preferences/screen/AlertView.cpp b/src/preferences/screen/AlertView.cpp
index 47fc6e0360..394a7881f5 100644
--- a/src/preferences/screen/AlertView.cpp
+++ b/src/preferences/screen/AlertView.cpp
@@ -25,7 +25,7 @@
 #include <Path.h>
 
 
-AlertView::AlertView(BRect frame, char *name)
+AlertView::AlertView(BRect frame, const char *name)
 	: BView(frame, name, B_FOLLOW_ALL, B_WILL_DRAW | B_PULSE_NEEDED),
 	// we will wait 12 seconds until we send a message
 	fSeconds(12)
diff --git a/src/preferences/screen/AlertView.h b/src/preferences/screen/AlertView.h
index 4c99960c1a..66432b3c42 100644
--- a/src/preferences/screen/AlertView.h
+++ b/src/preferences/screen/AlertView.h
@@ -20,7 +20,7 @@ class BStringView;
 
 class AlertView : public BView {
 	public:
-		AlertView(BRect frame, char* name);
+		AlertView(BRect frame, const char* name);
 
 		virtual void AttachedToWindow();
 		virtual void Draw(BRect updateRect);
diff --git a/src/preferences/screen/MonitorView.cpp b/src/preferences/screen/MonitorView.cpp
index 8cc6fbb9fd..66d8af2c1d 100644
--- a/src/preferences/screen/MonitorView.cpp
+++ b/src/preferences/screen/MonitorView.cpp
@@ -20,7 +20,7 @@
 #include "Constants.h"
 
 
-MonitorView::MonitorView(BRect rect, char *name, int32 width, int32 height)
+MonitorView::MonitorView(BRect rect, const char *name, int32 width, int32 height)
 	: BView(rect, name, B_FOLLOW_ALL, B_WILL_DRAW | B_FULL_UPDATE_ON_RESIZE),
 	fMaxWidth(1920),
 	fMaxHeight(1200),
diff --git a/src/preferences/screen/MonitorView.h b/src/preferences/screen/MonitorView.h
index a3ed0ff611..a065de7bd5 100644
--- a/src/preferences/screen/MonitorView.h
+++ b/src/preferences/screen/MonitorView.h
@@ -17,7 +17,7 @@
 
 class MonitorView : public BView {
 public:
-							MonitorView(BRect frame, char* name,
+							MonitorView(BRect frame, const char* name,
 								int32 screenWidth, int32 screenHeight);
 	virtual					~MonitorView();
 
diff --git a/src/preferences/time/DateTimeEdit.cpp b/src/preferences/time/DateTimeEdit.cpp
index c30e81eea9..7c4d7b6330 100644
--- a/src/preferences/time/DateTimeEdit.cpp
+++ b/src/preferences/time/DateTimeEdit.cpp
@@ -170,7 +170,7 @@ TTimeEdit::DrawSeparator(uint32 index)
 	BRect bounds = section->Frame();
 	float sepWidth = SeparatorWidth();
 
-	char* sep = ":";
+	const char* sep = ":";
 	if (index == 2)
 		sep = "-";
 
diff --git a/src/preferences/time/TZDisplay.cpp b/src/preferences/time/TZDisplay.cpp
index 06e234d967..aae3faed0d 100644
--- a/src/preferences/time/TZDisplay.cpp
+++ b/src/preferences/time/TZDisplay.cpp
@@ -123,7 +123,7 @@ TTZDisplay::SetTime(int32 hour, int32 minute)
 	if (ahour == 0)
 		ahour = 12;
 
-	char *ap = "AM";
+	const char *ap = "AM";
 	if (hour > 11)
 		ap = "PM";
 
diff --git a/src/preferences/virtualmemory/SettingsWindow.cpp b/src/preferences/virtualmemory/SettingsWindow.cpp
index 82ff32b54b..eb456c8830 100644
--- a/src/preferences/virtualmemory/SettingsWindow.cpp
+++ b/src/preferences/virtualmemory/SettingsWindow.cpp
@@ -58,7 +58,7 @@ byte_string(int64 size)
 	if (value < 1024)
 		snprintf(string, sizeof(string), "%Ld B", size);
 	else {
-		char *units[] = {"K", "M", "G", NULL};
+		const char *units[] = {"K", "M", "G", NULL};
 		int32 i = -1;
 
 		do {