diff --git a/src/compiler/glsl/glcpp/pp.c b/src/compiler/glsl/glcpp/pp.c
index aadf899a7d0..db53e7dd165 100644
--- a/src/compiler/glsl/glcpp/pp.c
+++ b/src/compiler/glsl/glcpp/pp.c
@@ -195,11 +195,11 @@ remove_line_continuations(glcpp_parser_t *ctx, const char *shader)
 			}
 		}
 
-		search_start = backslash + 1;
-
 		if (backslash == NULL)
 			break;
 
+		search_start = backslash + 1;
+
 		/* At each line continuation, (backslash followed by a
 		 * newline), copy all preceding text to the output, then
 		 * advance the shader pointer to the character after the