diff --git a/src/geo_key_directory.rs b/src/geo_key_directory.rs
index d4b3d3a..c41d891 100644
--- a/src/geo_key_directory.rs
+++ b/src/geo_key_directory.rs
@@ -462,7 +462,7 @@ impl GeoKeyDirectory {
     ) -> TiffResult<u16> {
         if location_tag.is_some() {
             return Err(TiffError::FormatError(TiffFormatError::Format(format!(
-                "Key `{key_tag:?}` did not have the expected value type."
+                "Key `{key_tag:?}` did not have the expected SHORT value type."
             ))));
         }
 
@@ -484,7 +484,7 @@ impl GeoKeyDirectory {
     ) -> TiffResult<f64> {
         if location_tag != Some(Tag::GeoDoubleParamsTag) {
             return Err(TiffError::FormatError(TiffFormatError::Format(format!(
-                "Key `{key_tag:?}` did not have the expected value type."
+                "Key `{key_tag:?}` did not have the expected DOUBLE value type."
             ))));
         }
 
@@ -514,7 +514,7 @@ impl GeoKeyDirectory {
 
         if location_tag != Some(Tag::GeoAsciiParamsTag) {
             return Err(TiffError::FormatError(TiffFormatError::Format(format!(
-                "Key `{key_tag:?}` did not have the expected value type."
+                "Key `{key_tag:?}` did not have the expected ASCII value type."
             ))));
         }