diff --git a/src/BaseIO.cpp b/src/BaseIO.cpp
index 6e7c369b..d4971736 100644
--- a/src/BaseIO.cpp
+++ b/src/BaseIO.cpp
@@ -75,11 +75,10 @@ Status BaseIO::createDataAttributes(const std::string& path,
   return Status::Success;
 }
 
-Status BaseIO::createTimestampsAttributes(const std::string& path,
-                                          const float& interval)
+Status BaseIO::createTimestampsAttributes(const std::string& path)
 {
-  createAttribute(
-      BaseDataType::F32, &interval, path + "/timestamps", "interval");
+  int interval = 1;
+  createAttribute(BaseDataType::I32, static_cast<const void*>(&interval), path + "/timestamps", "interval");
   createAttribute("seconds", path + "/timestamps", "unit");
 
   return Status::Success;
diff --git a/src/BaseIO.hpp b/src/BaseIO.hpp
index 60104f01..6fa39ae5 100644
--- a/src/BaseIO.hpp
+++ b/src/BaseIO.hpp
@@ -291,8 +291,7 @@ class BaseIO
    * @param interval Value is '1'
    * @return The status of the operation.
    */
-  Status createTimestampsAttributes(const std::string& path,
-                                    const float& interval);
+  Status createTimestampsAttributes(const std::string& path);
   /**
    * @brief Returns true if the file is open.
    * @return True if the file is open, false otherwise.
diff --git a/src/nwb/NWBFile.cpp b/src/nwb/NWBFile.cpp
index 80fdb184..5ea0f851 100644
--- a/src/nwb/NWBFile.cpp
+++ b/src/nwb/NWBFile.cpp
@@ -148,8 +148,7 @@ Status NWBFile::startRecording(std::vector<Types::ChannelGroup> recordingArrays)
                             SizeArray {0},
                             SizeArray {CHUNK_XSIZE},
                             electricalSeries->getPath() + "/timestamps");
-    io->createTimestampsAttributes(electricalSeries->getPath(),
-                                   1 / channelGroup[0].getSamplingRate());
+    io->createTimestampsAttributes(electricalSeries->getPath());
 
     electricalSeries->channelConversion = createRecordingData(
         BaseDataType::F32,