diff --git a/sourcepawn/compiler/AMBuilder b/sourcepawn/compiler/AMBuilder
index 9ec19520a..0b3d23e0e 100644
--- a/sourcepawn/compiler/AMBuilder
+++ b/sourcepawn/compiler/AMBuilder
@@ -89,8 +89,8 @@ binary.sources += [
   'sc5.c',
   'sc6.c',
   'sc7.c',
-  'scexpand.c',
-  'sci18n.c',
+  'scexpand.cpp',
+  'sci18n.cpp',
   'sclist.cpp',
   'scmemfil.cpp',
   'scstate.cpp',
diff --git a/sourcepawn/compiler/scexpand.c b/sourcepawn/compiler/scexpand.cpp
similarity index 100%
rename from sourcepawn/compiler/scexpand.c
rename to sourcepawn/compiler/scexpand.cpp
diff --git a/sourcepawn/compiler/sci18n.c b/sourcepawn/compiler/sci18n.cpp
similarity index 100%
rename from sourcepawn/compiler/sci18n.c
rename to sourcepawn/compiler/sci18n.cpp