3 files changed, 6 insertions, 6 deletions
diff --git a/engines/agos/script_pn.cpp b/engines/agos/script_pn.cpp
index 196350b9bf..60a1376f25 100644
--- a/engines/agos/script_pn.cpp
+++ b/engines/agos/script_pn.cpp
@@ -466,8 +466,8 @@ void AGOSEngine_PN::opn_opcode35() {
 void AGOSEngine_PN::opn_opcode36() {
 	for (int i = 0; i < _dataBase[57] + 1; ++i)
 		_wordcp[i] = 0;
-	if (isspace(static_cast<unsigned char>(*_inpp)))
-		while ((*_inpp) && (isspace(static_cast<unsigned char>(*_inpp))))
+	if (Common::isSpace(*_inpp))
+		while ((*_inpp) && (Common::isSpace(*_inpp)))
 			_inpp++;
 	if (*_inpp == 0) {
 		setScriptReturn(false);
@@ -481,7 +481,7 @@ void AGOSEngine_PN::opn_opcode36() {
 	}
 
 	int ct = 1;
-	while ((*_inpp != '.') && (*_inpp != ',') && (!isspace(static_cast<unsigned char>(*_inpp))) && (*_inpp != '\0') &&
+	while ((*_inpp != '.') && (*_inpp != ',') && (!Common::isSpace(*_inpp)) && (*_inpp != '\0') &&
 		(*_inpp!='"')) {
 		if (ct < _dataBase[57])
 			_wordcp[ct++] = *_inpp;
@@ -581,7 +581,7 @@ void AGOSEngine_PN::opn_opcode46() {
 		return;
 	}
 	x++;
-	while ((*x != '.') && (*x != ',') && (*x != '"') && (!isspace(static_cast<unsigned char>(*x))) && (*x != '\0'))
+	while ((*x != '.') && (*x != ',') && (*x != '"') && (!Common::isSpace(*x)) && (*x != '\0'))
 		pcf(*x++);
 	setScriptReturn(true);
 }
diff --git a/engines/agos/string.cpp b/engines/agos/string.cpp
index 410fd5a1ce..ee1b9df246 100644
--- a/engines/agos/string.cpp
+++ b/engines/agos/string.cpp
@@ -152,7 +152,7 @@ const byte *AGOSEngine::getStringPtrByID(uint16 stringId, bool upperCase) {
 	}
 
 	if (upperCase && *dst) {
-		if (islower(*dst))
+		if (Common::isLower(*dst))
 			*dst = toupper(*dst);
 	}
 
diff --git a/engines/agos/string_pn.cpp b/engines/agos/string_pn.cpp
index ac8c263da3..4d4e2be16a 100644
--- a/engines/agos/string_pn.cpp
+++ b/engines/agos/string_pn.cpp
@@ -137,7 +137,7 @@ void AGOSEngine_PN::pcf(uint8 ch) {
 		if ((ch != 32) || (_bp + _xofs != 50))
 			_buffer[_bp++] = ch;
 	}
-	if ((ch != 254) && (!isspace(ch)) && (_bp < 60))
+	if ((ch != 254) && (!Common::isSpace(ch)) && (_bp < 60))
 		return;
 	/* We know have a case of needing to print the text */
 	if (_bp + _xofs > 50) {