diff --git a/src/gfx_layout_icu.cpp b/src/gfx_layout_icu.cpp
index 6a5dcbe1e7..9d3dff5f8e 100644
--- a/src/gfx_layout_icu.cpp
+++ b/src/gfx_layout_icu.cpp
@@ -104,7 +104,7 @@ private:
 	int partial_offset;
 
 public:
-	ICUParagraphLayout(std::vector<ICURun> &runs, UChar *buff, size_t buff_length) : runs(runs), buff(buff), buff_length(buff_length)
+	ICUParagraphLayout(std::vector<ICURun> &&runs, UChar *buff, size_t buff_length) : runs(std::move(runs)), buff(buff), buff_length(buff_length)
 	{
 		this->Reflow();
 	}
@@ -374,7 +374,7 @@ std::vector<ICURun> ItemizeStyle(std::vector<ICURun> &runs_current, FontMap &fon
 		run.Shape(buff, length);
 	}
 
-	return new ICUParagraphLayout(runs, buff, length);
+	return new ICUParagraphLayout(std::move(runs), buff, length);
 }
 
 /* static */ std::unique_ptr<icu::BreakIterator> ICUParagraphLayoutFactory::break_iterator;
diff --git a/src/os/windows/string_uniscribe.cpp b/src/os/windows/string_uniscribe.cpp
index 7a4c0244d2..a3d92c52d6 100644
--- a/src/os/windows/string_uniscribe.cpp
+++ b/src/os/windows/string_uniscribe.cpp
@@ -113,7 +113,7 @@ public:
 		}
 	};
 
-	UniscribeParagraphLayout(std::vector<UniscribeRun> &ranges, const UniscribeParagraphLayoutFactory::CharType *buffer) : text_buffer(buffer), ranges(ranges)
+	UniscribeParagraphLayout(std::vector<UniscribeRun> &&ranges, const UniscribeParagraphLayoutFactory::CharType *buffer) : text_buffer(buffer), ranges(std::move(ranges))
 	{
 		this->Reflow();
 	}
@@ -315,7 +315,7 @@ static std::vector<SCRIPT_ITEM> UniscribeItemizeString(UniscribeParagraphLayoutF
 		}
 	}
 
-	return new UniscribeParagraphLayout(ranges, buff);
+	return new UniscribeParagraphLayout(std::move(ranges), buff);
 }
 
 /* virtual */ std::unique_ptr<const ParagraphLayouter::Line> UniscribeParagraphLayout::NextLine(int max_width)