diff --git a/src/COMPRESS/dump_atom_gz.cpp b/src/COMPRESS/dump_atom_gz.cpp
index b3b202e373..7b54fd8e62 100644
--- a/src/COMPRESS/dump_atom_gz.cpp
+++ b/src/COMPRESS/dump_atom_gz.cpp
@@ -135,7 +135,33 @@ void DumpAtomGZ::write_header(bigint ndump)
 
 void DumpAtomGZ::write_data(int n, double *mybuf)
 {
-  writer.write(mybuf, n);
+  if (buffer_flag == 1) {
+    writer.write(mybuf, n);
+  } else {
+    constexpr size_t VBUFFER_SIZE = 256;
+    char vbuffer[VBUFFER_SIZE];
+    int m = 0;
+    for (int i = 0; i < n; i++) {
+      int written = 0;
+      if (image_flag == 1) {
+        written = snprintf(vbuffer, VBUFFER_SIZE, format,
+              static_cast<tagint> (mybuf[m]), static_cast<int> (mybuf[m+1]),
+              mybuf[m+2],mybuf[m+3],mybuf[m+4], static_cast<int> (mybuf[m+5]),
+              static_cast<int> (mybuf[m+6]), static_cast<int> (mybuf[m+7]));
+      } else {
+        written = snprintf(vbuffer, VBUFFER_SIZE, format,
+              static_cast<tagint> (mybuf[m]), static_cast<int> (mybuf[m+1]),
+              mybuf[m+2],mybuf[m+3],mybuf[m+4]);
+      }
+      if (written > 0) {
+        writer.write(vbuffer, written);
+      } else if (written < 0) {
+        error->one(FLERR, "Error while writing dump atom/gz output");
+      }
+
+      m += size_one;
+    }
+  }
 }
 
 /* ---------------------------------------------------------------------- */
diff --git a/src/COMPRESS/dump_atom_zstd.cpp b/src/COMPRESS/dump_atom_zstd.cpp
index f739a53322..b53ebb2269 100644
--- a/src/COMPRESS/dump_atom_zstd.cpp
+++ b/src/COMPRESS/dump_atom_zstd.cpp
@@ -143,7 +143,33 @@ void DumpAtomZstd::write_header(bigint ndump)
 
 void DumpAtomZstd::write_data(int n, double *mybuf)
 {
-  writer.write(mybuf, n);
+  if (buffer_flag == 1) {
+    writer.write(mybuf, n);
+  } else {
+    constexpr size_t VBUFFER_SIZE = 256;
+    char vbuffer[VBUFFER_SIZE];
+    int m = 0;
+    for (int i = 0; i < n; i++) {
+      int written = 0;
+      if (image_flag == 1) {
+        written = snprintf(vbuffer, VBUFFER_SIZE, format,
+              static_cast<tagint> (mybuf[m]), static_cast<int> (mybuf[m+1]),
+              mybuf[m+2],mybuf[m+3],mybuf[m+4], static_cast<int> (mybuf[m+5]),
+              static_cast<int> (mybuf[m+6]), static_cast<int> (mybuf[m+7]));
+      } else {
+        written = snprintf(vbuffer, VBUFFER_SIZE, format,
+              static_cast<tagint> (mybuf[m]), static_cast<int> (mybuf[m+1]),
+              mybuf[m+2],mybuf[m+3],mybuf[m+4]);
+      }
+      if (written > 0) {
+        writer.write(vbuffer, written);
+      } else if (written < 0) {
+        error->one(FLERR, "Error while writing dump atom/gz output");
+      }
+
+      m += size_one;
+    }
+  }
 }
 
 /* ---------------------------------------------------------------------- */
diff --git a/unittest/formats/test_dump_atom_compressed.cpp b/unittest/formats/test_dump_atom_compressed.cpp
index da68acee2a..aeb747004e 100644
--- a/unittest/formats/test_dump_atom_compressed.cpp
+++ b/unittest/formats/test_dump_atom_compressed.cpp
@@ -61,6 +61,34 @@ TEST_F(DumpAtomCompressTest, compressed_run0)
     delete_file(converted_file);
 }
 
+TEST_F(DumpAtomCompressTest, compressed_no_buffer_run0)
+{
+    if (!COMPRESS_BINARY) GTEST_SKIP();
+
+    auto text_file       = text_dump_filename("no_buffer_run0.melt");
+    auto compressed_file = compressed_dump_filename("no_buffer_run0.melt");
+
+    if(compression_style == "atom/zstd") {
+        generate_text_and_compressed_dump(text_file, compressed_file, "", "", "buffer no", "buffer no checksum yes", 0);
+    } else {
+        generate_text_and_compressed_dump(text_file, compressed_file, "", "buffer no", 0);
+    }
+
+    TearDown();
+
+    ASSERT_FILE_EXISTS(text_file);
+    ASSERT_FILE_EXISTS(compressed_file);
+
+    auto converted_file = convert_compressed_to_text(compressed_file);
+
+    ASSERT_THAT(converted_file, Eq(converted_dump_filename("no_buffer_run0.melt")));
+    ASSERT_FILE_EXISTS(converted_file);
+    ASSERT_FILE_EQUAL(text_file, converted_file);
+    delete_file(text_file);
+    delete_file(compressed_file);
+    delete_file(converted_file);
+}
+
 TEST_F(DumpAtomCompressTest, compressed_multi_file_run1)
 {
     if (!COMPRESS_BINARY) GTEST_SKIP();