diff --git a/src/Mod/Draft/App/dxf.h b/src/Mod/Draft/App/dxf.h
index 72e8fa8d95..fd20cd6ef4 100644
--- a/src/Mod/Draft/App/dxf.h
+++ b/src/Mod/Draft/App/dxf.h
@@ -8,6 +8,7 @@
 #include <vector>
 #include <map>
 #include <set>
+#include <string>
 #include <iosfwd>
 #include <cstdio>
 #include <cstring>
diff --git a/src/Mod/Import/App/dxf.h b/src/Mod/Import/App/dxf.h
index 1cf811dd64..44da25c0f5 100644
--- a/src/Mod/Import/App/dxf.h
+++ b/src/Mod/Import/App/dxf.h
@@ -13,6 +13,7 @@
 #include <vector>
 #include <map>
 #include <set>
+#include <string>
 #include <iosfwd>
 #include <cstdio>
 #include <cstring>
diff --git a/src/Mod/Path/libarea/dxf.h b/src/Mod/Path/libarea/dxf.h
index 2e7163fa42..30527e6e88 100644
--- a/src/Mod/Path/libarea/dxf.h
+++ b/src/Mod/Path/libarea/dxf.h
@@ -8,6 +8,7 @@
 #include <vector>
 #include <map>
 #include <set>
+#include <string>
 #include <iosfwd>
 #include <cstdio>
 #include <cstring>