diff --git a/esphome/components/hub75/display.py b/esphome/components/hub75/display.py
index 7a3df333c9..20c731e730 100644
--- a/esphome/components/hub75/display.py
+++ b/esphome/components/hub75/display.py
@@ -555,7 +555,7 @@ async def to_code(config: ConfigType) -> None:
         cg.add_build_flag(f"-DHUB75_BIT_DEPTH={config[CONF_BIT_DEPTH]}")
 
     if CONF_GAMMA_CORRECT in config:
-        cg.add_build_flag(f"-DHUB75_GAMMA_MODE={config[CONF_GAMMA_CORRECT]}")
+        cg.add_build_flag(f"-DHUB75_GAMMA_MODE={config[CONF_GAMMA_CORRECT].enum_value}")
 
     # Await all pin expressions
     pin_expressions = {
diff --git a/tests/components/hub75/test.esp32-s3-idf-board.yaml b/tests/components/hub75/test.esp32-s3-idf-board.yaml
index 3723a80006..8c73a0fd44 100644
--- a/tests/components/hub75/test.esp32-s3-idf-board.yaml
+++ b/tests/components/hub75/test.esp32-s3-idf-board.yaml
@@ -6,6 +6,7 @@ display:
     panel_height: 32
     double_buffer: true
     brightness: 128
+    gamma_correct: gamma_2_2
     pages:
       - id: page1
         lambda: |-
diff --git a/tests/components/hub75/test.esp32-s3-idf.yaml b/tests/components/hub75/test.esp32-s3-idf.yaml
index f8ee26e73d..0adb4f991b 100644
--- a/tests/components/hub75/test.esp32-s3-idf.yaml
+++ b/tests/components/hub75/test.esp32-s3-idf.yaml
@@ -5,6 +5,7 @@ display:
     panel_height: 32
     double_buffer: true
     brightness: 128
+    gamma_correct: cie1931
     r1_pin: GPIO42
     g1_pin: GPIO41
     b1_pin: GPIO40