diff --git a/relight-cli/rtibuilder.cpp b/relight-cli/rtibuilder.cpp
index 25b779b3..aacb4a2c 100644
--- a/relight-cli/rtibuilder.cpp
+++ b/relight-cli/rtibuilder.cpp
@@ -936,8 +936,8 @@ size_t RtiBuilder::savePTM(const std::string &output) {
 
 	for(size_t i = 0; i < gbias.size(); i++) {
 		int j = coeffRemap[i];
-		gbias[i] = static_cast<int>(bias[j*3]*255.0);
-		gscale[i] = scale[j*3];
+		gbias[i] = static_cast<int>(bias[j+3]*255.0);
+		gscale[i] = scale[j+3];
 	}
 	for(float s: gscale)
 		stream << s << " ";
diff --git a/src/legacy_rti.cpp b/src/legacy_rti.cpp
index 399bc02c..6d92246d 100644
--- a/src/legacy_rti.cpp
+++ b/src/legacy_rti.cpp
@@ -65,8 +65,10 @@ bool getFloats(FILE *file, vector<float> &a, unsigned int expected = 0) {
 	buffer[255] = 0;
 
 	QString str = buffer;
+	//some rtis have a space after the last float, other a \n directly.
+	str = str.trimmed();
 	QStringList parts = str.split(' ');
-	parts.pop_back(); //remove \n
+
 	for(int i = 0; i < parts.size(); i++) {
 		bool ok;
 		float s = parts[i].toDouble(&ok);