diff --git a/src/input.cpp b/src/input.cpp
index 2a41cf5fc2..86afec6402 100644
--- a/src/input.cpp
+++ b/src/input.cpp
@@ -1728,13 +1728,9 @@ void Input::package()
     if (!modify->check_package("GPU"))
       error->all(FLERR,"Package gpu command without GPU package installed");
 
-    char **fixarg = new char*[2+narg];
-    fixarg[0] = (char *) "package_gpu";
-    fixarg[1] = (char *) "all";
-    fixarg[2] = (char *) "GPU";
-    for (int i = 1; i < narg; i++) fixarg[i+2] = arg[i];
-    modify->add_fix(2+narg,fixarg);
-    delete [] fixarg;
+    std::string fixcmd = "package_gpu all GPU";
+    for (int i = 1; i < narg; i++) fixcmd += std::string(" ") + arg[i];
+    modify->add_fix(fixcmd);
 
   } else if (strcmp(arg[0],"kokkos") == 0) {
     if (lmp->kokkos == NULL || lmp->kokkos->kokkos_exists == 0)
@@ -1747,26 +1743,18 @@ void Input::package()
       error->all(FLERR,
                  "Package omp command without USER-OMP package installed");
 
-    char **fixarg = new char*[2+narg];
-    fixarg[0] = (char *) "package_omp";
-    fixarg[1] = (char *) "all";
-    fixarg[2] = (char *) "OMP";
-    for (int i = 1; i < narg; i++) fixarg[i+2] = arg[i];
-    modify->add_fix(2+narg,fixarg);
-    delete [] fixarg;
+    std::string fixcmd = "package_omp all OMP";
+    for (int i = 1; i < narg; i++) fixcmd += std::string(" ") + arg[i];
+    modify->add_fix(fixcmd);
 
  } else if (strcmp(arg[0],"intel") == 0) {
     if (!modify->check_package("INTEL"))
       error->all(FLERR,
                  "Package intel command without USER-INTEL package installed");
 
-    char **fixarg = new char*[2+narg];
-    fixarg[0] = (char *) "package_intel";
-    fixarg[1] = (char *) "all";
-    fixarg[2] = (char *) "INTEL";
-    for (int i = 1; i < narg; i++) fixarg[i+2] = arg[i];
-    modify->add_fix(2+narg,fixarg);
-    delete [] fixarg;
+    std::string fixcmd = "package_intel all INTEL";
+    for (int i = 1; i < narg; i++) fixcmd += std::string(" ") + arg[i];
+    modify->add_fix(fixcmd);
 
   } else error->all(FLERR,"Illegal package command");
 }