diff --git a/src/fix_nph.cpp b/src/fix_nph.cpp
index 838a2091e4..b863be12ab 100644
--- a/src/fix_nph.cpp
+++ b/src/fix_nph.cpp
@@ -13,7 +13,6 @@
 
 #include "string.h"
 #include "fix_nph.h"
-#include "group.h"
 #include "modify.h"
 #include "error.h"
 
diff --git a/src/fix_nph_sphere.cpp b/src/fix_nph_sphere.cpp
index 134cf06c82..bc0e23a3b6 100644
--- a/src/fix_nph_sphere.cpp
+++ b/src/fix_nph_sphere.cpp
@@ -13,7 +13,6 @@
 
 #include "string.h"
 #include "fix_nph_sphere.h"
-#include "group.h"
 #include "modify.h"
 #include "error.h"