diff --git a/Applications/FileIO/PetrelInterface.cpp b/Applications/FileIO/PetrelInterface.cpp
index 38cd33578b613c4cefb862251e6b1c6680204ae8..53f7ab75ec24bea1184d81b4027e3763203aa71a 100644
--- a/Applications/FileIO/PetrelInterface.cpp
+++ b/Applications/FileIO/PetrelInterface.cpp
@@ -191,10 +191,10 @@ void PetrelInterface::readPetrelWellTrace(std::istream& in)
 
 void PetrelInterface::readPetrelWellTraceData(std::istream& in)
 {
-    std::string line = readLine(in);
+    readLine(in);
 
     // read yet another header line
-    line = readLine(in);
+    std::string line = readLine(in);
     while (line[0] == '#')
     {
         line = readLine(in);