diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4032e7c8..f776267a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,10 @@ Valid subsections within a version are:
 
 Things to be included in the next release go here.
 
+### Fixed
+
+- fix: TekScope2K active channel query needs HEADER options enabled to function properly
+
 ### Added
 
 - `collectgarbage()` is now called during cleanup of `TSPDevice` children.
diff --git a/src/tm_devices/drivers/pi/scopes/tekscope_2k/tekscope_2k.py b/src/tm_devices/drivers/pi/scopes/tekscope_2k/tekscope_2k.py
index 65c55738..c16213e9 100644
--- a/src/tm_devices/drivers/pi/scopes/tekscope_2k/tekscope_2k.py
+++ b/src/tm_devices/drivers/pi/scopes/tekscope_2k/tekscope_2k.py
@@ -39,7 +39,11 @@ def get_available_data_sources(self) -> List[str]:
         Returns:
             The list of available data sources as strings.
         """
+        previous_header_state = self.query("HEADER?").split(" ")[-1]  # Read previous header state
+        self.write("HEADER 1")  # Turn on header state so SELECT query works correctly
         source_string = self.query("SELECT?")
+        self.write(f"HEADER {previous_header_state}")  # Return header state back to original
+
         source_string = source_string.split(":")[-1]  # Remove :SELECT: from beginning
         source_list = source_string.split(";")
         available_source_list: List[str] = []
diff --git a/tests/sim_devices/scope/mso2kb.yaml b/tests/sim_devices/scope/mso2kb.yaml
index 31ea8551..2d39467a 100644
--- a/tests/sim_devices/scope/mso2kb.yaml
+++ b/tests/sim_devices/scope/mso2kb.yaml
@@ -46,10 +46,17 @@ devices:
       verbosity:
         default: 0
         getter:
-          q: :VERBose?
+          q: VERBOSE?
           r: '{:s}'
         setter:
-          q: :VERBose {:s}
+          q: VERBOSE {:s}
+      header:
+        default: 0
+        getter:
+          q: HEADER?
+          r: '{:s}'
+        setter:
+          q: HEADER {:s}
       channel_select:
         default: :SELECT:BUS1 0;BUS2 0;CH1 1;CH2 0;CH3 0;CH4 0;MATH 0;REF1 0;REF2
           0;D0 1;D1 0;D2 0;D3 0;D4 0;D5 0;D6 0;D7 0;D8 0;D9 0;D10 0;D11 0;D12 0;D13