diff --git a/liblog/include/log/log_read.h b/liblog/include/log/log_read.h
index 6601072..18c1c33 100644
--- a/liblog/include/log/log_read.h
+++ b/liblog/include/log/log_read.h
@@ -139,8 +139,7 @@
                                       char* buf, size_t len);
 ssize_t android_logger_get_prune_list(struct logger_list* logger_list,
                                       char* buf, size_t len);
-int android_logger_set_prune_list(struct logger_list* logger_list, char* buf,
-                                  size_t len);
+int android_logger_set_prune_list(struct logger_list* logger_list, const char* buf, size_t len);
 
 #define ANDROID_LOG_RDONLY O_RDONLY
 #define ANDROID_LOG_WRONLY O_WRONLY
diff --git a/liblog/logd_reader.cpp b/liblog/logd_reader.cpp
index 96e7a61..6865c14 100644
--- a/liblog/logd_reader.cpp
+++ b/liblog/logd_reader.cpp
@@ -33,6 +33,8 @@
 #include <time.h>
 #include <unistd.h>
 
+#include <string>
+
 #include <cutils/sockets.h>
 #include <private/android_filesystem_config.h>
 #include <private/android_logger.h>
@@ -249,22 +251,14 @@
   return SendLogdControlMessage(buf, len);
 }
 
-int android_logger_set_prune_list(struct logger_list* logger_list, char* buf, size_t len) {
+int android_logger_set_prune_list(struct logger_list* logger_list, const char* buf, size_t len) {
   if (logger_list->mode & ANDROID_LOG_PSTORE) {
     return -EINVAL;
   }
 
-  const char cmd[] = "setPruneList ";
-  const size_t cmdlen = sizeof(cmd) - 1;
+  std::string cmd = "setPruneList " + std::string{buf, len};
 
-  if (strlen(buf) > (len - cmdlen)) {
-    return -ENOMEM; /* KISS */
-  }
-  memmove(buf + cmdlen, buf, len - cmdlen);
-  buf[len - 1] = '\0';
-  memcpy(buf, cmd, cmdlen);
-
-  return check_log_success(buf, SendLogdControlMessage(buf, len));
+  return check_log_success(cmd.data(), SendLogdControlMessage(cmd.data(), cmd.size()));
 }
 
 static int logdOpen(struct logger_list* logger_list) {
diff --git a/logcat/logcat.cpp b/logcat/logcat.cpp
index 831b4e3..cd5d7d4 100644
--- a/logcat/logcat.cpp
+++ b/logcat/logcat.cpp
@@ -1075,17 +1075,8 @@
 
     if (setPruneList) {
         size_t len = strlen(setPruneList);
-        // extra 32 bytes are needed by android_logger_set_prune_list
-        size_t bLen = len + 32;
-        char* buf = nullptr;
-        if (asprintf(&buf, "%-*s", (int)(bLen - 1), setPruneList) > 0) {
-            buf[len] = '\0';
-            if (android_logger_set_prune_list(logger_list.get(), buf, bLen)) {
-                error(EXIT_FAILURE, 0, "Failed to set the prune list.");
-            }
-            free(buf);
-        } else {
-            error(EXIT_FAILURE, 0, "Failed to set the prune list (alloc).");
+        if (android_logger_set_prune_list(logger_list.get(), setPruneList, len)) {
+            error(EXIT_FAILURE, 0, "Failed to set the prune list.");
         }
         return EXIT_SUCCESS;
     }