diff --git a/Tools/GNUMake/packages/Make.openpmd b/Tools/GNUMake/packages/Make.openpmd
index c0c57676e7f..f512e697130 100644
--- a/Tools/GNUMake/packages/Make.openpmd
+++ b/Tools/GNUMake/packages/Make.openpmd
@@ -1,4 +1,4 @@
-CPPFLAGS += -DAMREX_USE_OPENPMD_API
+CPPFLAGS += -DAMREX_USE_OPENPMD
 include $(AMREX_HOME)/Src/Extern/openPMD-api/Make.package
 
 ifndef AMREX_OPENPMD_HOME