diff --git a/ofborg/src/nixstats.rs b/ofborg/src/nixstats.rs
index f098740..6d1e5ec 100644
--- a/ofborg/src/nixstats.rs
+++ b/ofborg/src/nixstats.rs
@@ -124,10 +124,10 @@ impl<'a> EvaluationStatsDiff<'a> {
 
                 if left > right {
                     diff = left - right;
-                    direction = "🡖 ";
+                    direction = "↘ ";
                 } else if left < right {
                     diff = right - left;
-                    direction = "🡕 ";
+                    direction = "↗ ";
                 } else {
                     diff = 0;
                     direction = "";
@@ -157,10 +157,10 @@ impl<'a> EvaluationStatsDiff<'a> {
 
                 if left > right {
                     diff = left - right;
-                    direction = "🡖 ";
+                    direction = "↘ ";
                 } else if left < right {
                     diff = right - left;
-                    direction = "🡕 ";
+                    direction = "↗ ";
                 } else {
                     diff = 0.0;
                     direction = "";
@@ -515,33 +515,33 @@ mod tests {
             r#"
 |            stat            |     before     |     after      |       Δ       |   Δ%   |
 |:---------------------------|---------------:|---------------:|:--------------|-------:|
-| **cpuTime**                |         135.20 |         132.90 | 🡖 2.30        | -1.70% |
-| **envs-bytes**             |  3,563,057,008 |  3,417,282,480 | 🡖 145,774,528 | -4.09% |
-| **envs-elements**          |    183,953,876 |    177,627,124 | 🡖 6,326,752   | -3.44% |
-| **envs-number**            |    130,714,125 |    124,766,593 | 🡖 5,947,532   | -4.55% |
-| **gc-heapSize**            | 12,104,687,616 | 11,433,721,856 | 🡖 670,965,760 | -5.54% |
-| **gc-totalBytes**          | 24,191,819,392 | 23,468,008,832 | 🡖 723,810,560 | -2.99% |
-| **list-bytes**             |  1,659,372,128 |  1,635,598,944 | 🡖 23,773,184  | -1.43% |
-| **list-concats**           |      7,194,150 |      6,988,658 | 🡖 205,492     | -2.86% |
-| **list-elements**          |    207,421,516 |    204,449,868 | 🡖 2,971,648   | -1.43% |
-| **nrAvoided**              |    177,840,681 |    170,493,166 | 🡖 7,347,515   | -4.13% |
-| **nrFunctionCalls**        |    115,193,164 |    109,822,957 | 🡖 5,370,207   | -4.66% |
-| **nrLookups**              |     75,292,052 |     75,275,349 | 🡖 16,703      | -0.02% |
-| **nrOpUpdateValuesCopied** |    208,834,564 |    208,814,478 | 🡖 20,086      | -0.01% |
-| **nrOpUpdates**            |     11,883,339 |     11,881,928 | 🡖 1,411       | -0.01% |
-| **nrPrimOpCalls**          |     85,571,252 |     80,373,629 | 🡖 5,197,623   | -6.07% |
-| **nrThunks**               |    173,325,665 |    167,655,588 | 🡖 5,670,077   | -3.27% |
-| **sets-bytes**             |  7,134,676,648 |  7,133,945,368 | 🡖 731,280     | -0.01% |
-| **sets-elements**          |    288,174,680 |    288,145,266 | 🡖 29,414      | -0.01% |
-| **sets-number**            |     27,310,541 |     27,307,373 | 🡖 3,168       | -0.01% |
+| **cpuTime**                |         135.20 |         132.90 | ↘ 2.30        | -1.70% |
+| **envs-bytes**             |  3,563,057,008 |  3,417,282,480 | ↘ 145,774,528 | -4.09% |
+| **envs-elements**          |    183,953,876 |    177,627,124 | ↘ 6,326,752   | -3.44% |
+| **envs-number**            |    130,714,125 |    124,766,593 | ↘ 5,947,532   | -4.55% |
+| **gc-heapSize**            | 12,104,687,616 | 11,433,721,856 | ↘ 670,965,760 | -5.54% |
+| **gc-totalBytes**          | 24,191,819,392 | 23,468,008,832 | ↘ 723,810,560 | -2.99% |
+| **list-bytes**             |  1,659,372,128 |  1,635,598,944 | ↘ 23,773,184  | -1.43% |
+| **list-concats**           |      7,194,150 |      6,988,658 | ↘ 205,492     | -2.86% |
+| **list-elements**          |    207,421,516 |    204,449,868 | ↘ 2,971,648   | -1.43% |
+| **nrAvoided**              |    177,840,681 |    170,493,166 | ↘ 7,347,515   | -4.13% |
+| **nrFunctionCalls**        |    115,193,164 |    109,822,957 | ↘ 5,370,207   | -4.66% |
+| **nrLookups**              |     75,292,052 |     75,275,349 | ↘ 16,703      | -0.02% |
+| **nrOpUpdateValuesCopied** |    208,834,564 |    208,814,478 | ↘ 20,086      | -0.01% |
+| **nrOpUpdates**            |     11,883,339 |     11,881,928 | ↘ 1,411       | -0.01% |
+| **nrPrimOpCalls**          |     85,571,252 |     80,373,629 | ↘ 5,197,623   | -6.07% |
+| **nrThunks**               |    173,325,665 |    167,655,588 | ↘ 5,670,077   | -3.27% |
+| **sets-bytes**             |  7,134,676,648 |  7,133,945,368 | ↘ 731,280     | -0.01% |
+| **sets-elements**          |    288,174,680 |    288,145,266 | ↘ 29,414      | -0.01% |
+| **sets-number**            |     27,310,541 |     27,307,373 | ↘ 3,168       | -0.01% |
 | **sizes-Attr**             |             24 |             24 | 0             |        |
 | **sizes-Bindings**         |              8 |              8 | 0             |        |
 | **sizes-Env**              |             16 |             16 | 0             |        |
 | **sizes-Value**            |             24 |             24 | 0             |        |
-| **symbols-bytes**          |     16,324,262 |     16,324,250 | 🡖 12          | -0.00% |
-| **symbols-number**         |        372,918 |        372,917 | 🡖 1           | -0.00% |
-| **values-bytes**           |  6,250,904,880 |  5,869,027,296 | 🡖 381,877,584 | -6.11% |
-| **values-number**          |    260,454,370 |    244,542,804 | 🡖 15,911,566  | -6.11% |
+| **symbols-bytes**          |     16,324,262 |     16,324,250 | ↘ 12          | -0.00% |
+| **symbols-number**         |        372,918 |        372,917 | ↘ 1           | -0.00% |
+| **values-bytes**           |  6,250,904,880 |  5,869,027,296 | ↘ 381,877,584 | -6.11% |
+| **values-number**          |    260,454,370 |    244,542,804 | ↘ 15,911,566  | -6.11% |
 "#
             .trim_start(),
         );