diff --git a/src/apps/terminal/AppearPrefView.cpp b/src/apps/terminal/AppearPrefView.cpp
index 49ab99168db..7da4e58cd45 100644
--- a/src/apps/terminal/AppearPrefView.cpp
+++ b/src/apps/terminal/AppearPrefView.cpp
@@ -225,8 +225,8 @@ AppearancePrefView::AttachedToWindow()
 
   	_SetCurrentColorScheme(fColorSchemeField);
   	bool enableCustomColors =
-		!strcmp(fColorSchemeField->Menu()->FindMarked()->Label(),
-			gCustomColorScheme.name);
+		strcmp(fColorSchemeField->Menu()->FindMarked()->Label(),
+			gCustomColorScheme.name) == 0;
 
   	_EnableCustomColors(enableCustomColors);
 }
@@ -250,18 +250,18 @@ AppearancePrefView::MessageReceived(BMessage* msg)
 				= pref->getString(PREF_HALF_FONT_FAMILY);
 			const char* currentStyle
 				= pref->getString(PREF_HALF_FONT_STYLE);
-			if (currentFamily == NULL || strcmp(currentFamily, family)
-				|| currentStyle == NULL || strcmp(currentStyle, style)) {
+			if (currentFamily == NULL || strcmp(currentFamily, family) != 0
+				|| currentStyle == NULL || strcmp(currentStyle, style) != 0) {
 				pref->setString(PREF_HALF_FONT_FAMILY, family);
 				pref->setString(PREF_HALF_FONT_STYLE, style);
 				modified = true;
 			}
 			break;
 		}
+
 		case MSG_HALF_SIZE_CHANGED:
 			if (strcmp(PrefHandler::Default()->getString(PREF_HALF_FONT_SIZE),
-					fFontSize->Menu()->FindMarked()->Label())) {
-
+					fFontSize->Menu()->FindMarked()->Label()) != 0) {
 				PrefHandler::Default()->setString(PREF_HALF_FONT_SIZE,
 					fFontSize->Menu()->FindMarked()->Label());
 				modified = true;
@@ -405,7 +405,7 @@ AppearancePrefView::_SetCurrentColorScheme(BMenuField* field)
 
 	for (int32 i = 0; i < fColorSchemeField->Menu()->CountItems(); i++) {
 		BMenuItem* item = fColorSchemeField->Menu()->ItemAt(i);
-		if (!strcmp(item->Label(), currentSchemeName)) {
+		if (strcmp(item->Label(), currentSchemeName) == 0) {
 			item->SetMarked(true);
 			break;
 		}
@@ -440,8 +440,8 @@ AppearancePrefView::_MakeFontMenu(uint32 command,
 						BMenuItem* item = new BMenuItem(itemLabel,
 							message);
 						menu->AddItem(item);
-						if (!strcmp(defaultFamily, family)
-							&& !strcmp(defaultStyle, style))
+						if (strcmp(defaultFamily, family) == 0
+							&& strcmp(defaultStyle, style) == 0)
 							item->SetMarked(true);
 					}
 				}
@@ -502,7 +502,7 @@ AppearancePrefView::_MakeMenu(uint32 msg, const char** items,
 
 	int32 i = 0;
 	while (*items) {
-		if (!strcmp((*items), ""))
+		if (strcmp((*items), "") == 0)
 			menu->AddSeparatorItem();
 		else {
 			BMessage* message = new BMessage(msg);
@@ -529,7 +529,7 @@ AppearancePrefView::_MakeColorSchemeMenu(uint32 msg, const color_scheme** items,
 
 	int32 i = 0;
 	while (*items) {
-		if (!strcmp((*items)->name, ""))
+		if (strcmp((*items)->name, "") == 0)
 			menu->AddSeparatorItem();
 		else {
 			BMessage* message = new BMessage(msg);
diff --git a/src/apps/terminal/PrefHandler.cpp b/src/apps/terminal/PrefHandler.cpp
index b1e477870b8..41f96bf0db4 100644
--- a/src/apps/terminal/PrefHandler.cpp
+++ b/src/apps/terminal/PrefHandler.cpp
@@ -242,7 +242,7 @@ PrefHandler::getBool(const char *key)
 	if (value == NULL)
 		return false;
 
-	return !strcmp(value, PREF_TRUE);
+	return strcmp(value, PREF_TRUE) == 0;
 }
 
 
@@ -352,7 +352,7 @@ PrefHandler::_ConfirmFont(const char *key, const BFont *fallback)
 		if (get_font_family(i, &family) != B_OK)
 			continue;
 
-		if (!strcmp(family, font)) {
+		if (strcmp(family, font) == 0) {
 			// found font family: we can safely use this font
 			return;
 		}
diff --git a/src/apps/terminal/TermApp.cpp b/src/apps/terminal/TermApp.cpp
index 1f8cfb62cd0..002dd5dd78f 100644
--- a/src/apps/terminal/TermApp.cpp
+++ b/src/apps/terminal/TermApp.cpp
@@ -200,7 +200,7 @@ TermApp::RefsReceived(BMessage* message)
 	info.GetType(mimetype);
 
 	// if App opened by Pref file
-	if (!strcmp(mimetype, PREFFILE_MIMETYPE)) {
+	if (strcmp(mimetype, PREFFILE_MIMETYPE) == 0) {
 
 		BEntry ent(&ref);
 		BPath path(&ent);
@@ -209,7 +209,7 @@ TermApp::RefsReceived(BMessage* message)
 	}
 
 	// if App opened by Shell Script
-	if (!strcmp(mimetype, "text/x-haiku-shscript")){
+	if (strcmp(mimetype, "text/x-haiku-shscript") == 0) {
 		// Not implemented.
 		//    beep();
 		return;
diff --git a/src/apps/terminal/TermView.cpp b/src/apps/terminal/TermView.cpp
index e0fbb41eb85..2346a591b75 100644
--- a/src/apps/terminal/TermView.cpp
+++ b/src/apps/terminal/TermView.cpp
@@ -1862,7 +1862,8 @@ TermView::MessageReceived(BMessage *msg)
 			int32 encodingID;
 			BMessage specifier;
 			if (msg->GetCurrentSpecifier(&i, &specifier) == B_OK
-				&& !strcmp("encoding", specifier.FindString("property", i))) {
+				&& !strcmp("encoding",
+					specifier.FindString("property", i)) == 0) {
 				msg->FindInt32 ("data", &encodingID);
 				SetEncoding(encodingID);
 				msg->SendReply(B_REPLY);
@@ -1877,11 +1878,13 @@ TermView::MessageReceived(BMessage *msg)
 			int32 i;
 			BMessage specifier;
 			if (msg->GetCurrentSpecifier(&i, &specifier) == B_OK
-				&& !strcmp("encoding", specifier.FindString("property", i))) {
+				&& strcmp("encoding",
+					specifier.FindString("property", i)) == 0) {
 				BMessage reply(B_REPLY);
 				reply.AddInt32("result", Encoding());
 				msg->SendReply(&reply);
-			} else if (!strcmp("tty", specifier.FindString("property", i))) {
+			} else if (strcmp("tty",
+					specifier.FindString("property", i)) == 0) {
 				BMessage reply(B_REPLY);
 				reply.AddString("result", TerminalName());
 				msg->SendReply(&reply);