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-rw-r--r--src/sp-feturbulence.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/sp-feturbulence.cpp b/src/sp-feturbulence.cpp
index 138778984..f7b256898 100644
--- a/src/sp-feturbulence.cpp
+++ b/src/sp-feturbulence.cpp
@@ -174,7 +174,7 @@ sp_feTurbulence_set(SPObject *object, unsigned int key, gchar const *value)
case SP_ATTR_BASEFREQUENCY:
feTurbulence->baseFrequency.set(value);
//From SVG spec: If two <number>s are provided, the first number represents a base frequency in the X direction and the second value represents a base frequency in the Y direction. If one number is provided, then that value is used for both X and Y.
- if (feTurbulence->baseFrequency.getOptNumber() == -1) // -1 means "not set"
+ if (feTurbulence->baseFrequency.optNumIsSet() == false)
feTurbulence->baseFrequency.setOptNumber(feTurbulence->baseFrequency.getNumber());
object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
break;