diff --git a/src/core/math/ParserOMP.cpp b/src/core/math/ParserOMP.cpp
index c46dc4003042a8905a8c4963c2c9ffd99f6d3c12..e39786837abbfc112959137f1783e7238950838f 100644
--- a/src/core/math/ParserOMP.cpp
+++ b/src/core/math/ParserOMP.cpp
@@ -51,9 +51,9 @@ void FunctionParserOMP::parse(const std::string & eq)
    #ifdef _OPENMP
    #pragma omp parallel for schedule(static)
    #endif
-   for (uint_t t = 0; t < uint_c( omp_get_max_threads() ); ++t)
+   for (int t = 0; t < omp_get_max_threads(); ++t)
    {
-      parser_[t].parse(eq);
+      parser_[uint_c(t)].parse(eq);
    }
 }