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-rw-r--r--tests/prediction_gradient_check.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tests/prediction_gradient_check.c b/tests/prediction_gradient_check.c
index 85d61ead..2e212083 100644
--- a/tests/prediction_gradient_check.c
+++ b/tests/prediction_gradient_check.c
@@ -418,6 +418,7 @@ int main(int argc, char *argv[])
image.div = 1e-3;
image.bw = 0.01;
image.filename = malloc(256);
+ image.spectrum = spectrum_generate_gaussian(image.lambda, image.bw);
cr = crystal_new();
if ( cr == NULL ) {