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-rw-r--r--Source/Utils/WarpXUtil.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/Source/Utils/WarpXUtil.cpp b/Source/Utils/WarpXUtil.cpp
index 775b591a7..9682554d7 100644
--- a/Source/Utils/WarpXUtil.cpp
+++ b/Source/Utils/WarpXUtil.cpp
@@ -238,6 +238,9 @@ WarpXParser makeParser (std::string const& parse_function, std::vector<std::stri
} else if (std::strcmp(it->c_str(), "m_p") == 0) {
parser.setConstant(*it, PhysConst::m_p);
it = symbols.erase(it);
+ } else if (std::strcmp(it->c_str(), "m_u") == 0) {
+ parser.setConstant(*it, PhysConst::m_u);
+ it = symbols.erase(it);
} else if (std::strcmp(it->c_str(), "epsilon0") == 0) {
parser.setConstant(*it, PhysConst::ep0);
it = symbols.erase(it);