diff --git a/selection.c b/selection.c
index 3653fa1b..615088d8 100644
--- a/selection.c
+++ b/selection.c
@@ -497,7 +497,11 @@ selection_update(struct terminal *term, int col, int row)
         }
     }
 
-    if (term->selection.semantic == SELECTION_SEMANTIC_WORD) {
+    switch (term->selection.semantic) {
+    case SELECTION_SEMANTIC_NONE:
+        break;
+
+    case SELECTION_SEMANTIC_WORD:
         switch (term->selection.direction) {
         case SELECTION_LEFT:
             find_word_boundary_left(term, &new_end, false);
@@ -511,6 +515,23 @@ selection_update(struct terminal *term, int col, int row)
             assert(false);
             break;
         }
+        break;
+
+    case SELECTION_SEMANTIC_ROW:
+        switch (term->selection.direction) {
+        case SELECTION_LEFT:
+            new_end.col = 0;
+            break;
+
+        case SELECTION_RIGHT:
+            new_end.col = term->cols - 1;
+            break;
+
+        case SELECTION_UNDIR:
+            assert(false);
+            break;
+        }
+        break;
     }
 
     /* If an end point is in the middle of a multi-column character,
@@ -834,7 +855,7 @@ void
 selection_mark_row(
     struct seat *seat, struct terminal *term, int row, uint32_t serial)
 {
-    selection_start(term, 0, row, SELECTION_NORMAL, SELECTION_SEMANTIC_NONE);
+    selection_start(term, 0, row, SELECTION_NORMAL, SELECTION_SEMANTIC_ROW);
     selection_update(term, term->cols - 1, row);
     selection_finalize(seat, term, serial);
 }
diff --git a/terminal.h b/terminal.h
index 8d032d20..c158d214 100644
--- a/terminal.h
+++ b/terminal.h
@@ -181,7 +181,7 @@ enum mouse_reporting {
 enum cursor_style { CURSOR_BLOCK, CURSOR_UNDERLINE, CURSOR_BAR };
 
 enum selection_kind { SELECTION_NONE, SELECTION_NORMAL, SELECTION_BLOCK };
-enum selection_semantic { SELECTION_SEMANTIC_NONE, SELECTION_SEMANTIC_WORD};
+enum selection_semantic { SELECTION_SEMANTIC_NONE, SELECTION_SEMANTIC_WORD, SELECTION_SEMANTIC_ROW};
 enum selection_direction {SELECTION_UNDIR, SELECTION_LEFT, SELECTION_RIGHT};
 enum selection_scroll_direction {SELECTION_SCROLL_NOT, SELECTION_SCROLL_UP, SELECTION_SCROLL_DOWN};