diff --git a/src/EnergyPlus/api/datatransfer.cc b/src/EnergyPlus/api/datatransfer.cc
index ff98d413d0e..066e0ccfb6e 100644
--- a/src/EnergyPlus/api/datatransfer.cc
+++ b/src/EnergyPlus/api/datatransfer.cc
@@ -244,7 +244,7 @@ char *inputFilePath(EnergyPlusState state)
 {
     const auto *thisState = static_cast<EnergyPlus::EnergyPlusData *>(state);
     char *p = new char[std::strlen(thisState->dataStrGlobals->inputFilePath.string().c_str()) + 1];
-    std::strcpy(p, thisState->dataStrGlobals->inputFilePath.c_str());
+    std::strcpy(p, thisState->dataStrGlobals->inputFilePath.string().c_str());
     return p;
 }