diff --git a/src/kits/interface/layouter/ComplexLayouter.cpp b/src/kits/interface/layouter/ComplexLayouter.cpp
index b99ce6d50f..00f559a7a1 100644
--- a/src/kits/interface/layouter/ComplexLayouter.cpp
+++ b/src/kits/interface/layouter/ComplexLayouter.cpp
@@ -157,9 +157,9 @@ struct ComplexLayouter::SumItemBackup {
 
 
 // constructor
-ComplexLayouter::ComplexLayouter(int32 elementCount, int32 spacing)
+ComplexLayouter::ComplexLayouter(int32 elementCount, float spacing)
 	: fElementCount(elementCount),
-	  fSpacing(spacing),
+	  fSpacing((int32)spacing),
 	  fConstraints(new(nothrow) Constraint*[elementCount]),
 	  fWeights(new(nothrow) float[elementCount]),
 	  fSums(new(nothrow) SumItem[elementCount + 1]),
diff --git a/src/kits/interface/layouter/ComplexLayouter.h b/src/kits/interface/layouter/ComplexLayouter.h
index 990915e745..1ccec622b6 100644
--- a/src/kits/interface/layouter/ComplexLayouter.h
+++ b/src/kits/interface/layouter/ComplexLayouter.h
@@ -20,7 +20,7 @@ class LayoutOptimizer;
 class ComplexLayouter : public Layouter {
 public:
 								ComplexLayouter(int32 elementCount,
-									int32 spacing);
+									float spacing);
 	virtual						~ComplexLayouter();
 
 	virtual	status_t			InitCheck() const;
diff --git a/src/kits/interface/layouter/SimpleLayouter.cpp b/src/kits/interface/layouter/SimpleLayouter.cpp
index 06f02e18df..70a9f21236 100644
--- a/src/kits/interface/layouter/SimpleLayouter.cpp
+++ b/src/kits/interface/layouter/SimpleLayouter.cpp
@@ -113,9 +113,9 @@ public:
 
 
 // constructor
-SimpleLayouter::SimpleLayouter(int32 elementCount, int32 spacing)
+SimpleLayouter::SimpleLayouter(int32 elementCount, float spacing)
 	: fElementCount(elementCount),
-	  fSpacing(spacing),
+	  fSpacing((int32)spacing),
 	  fMin(0),
 	  fMax(B_SIZE_UNLIMITED),
 	  fPreferred(0),
diff --git a/src/kits/interface/layouter/SimpleLayouter.h b/src/kits/interface/layouter/SimpleLayouter.h
index cacfcc96b8..4f4d66e878 100644
--- a/src/kits/interface/layouter/SimpleLayouter.h
+++ b/src/kits/interface/layouter/SimpleLayouter.h
@@ -19,7 +19,7 @@ namespace Layout {
 class SimpleLayouter : public Layouter {
 public:
 								SimpleLayouter(int32 elementCount,
-									int32 spacing);
+									float spacing);
 	virtual						~SimpleLayouter();
 
 	virtual	void				AddConstraints(int32 element, int32 length,