diff --git a/.github/workflows/ccpp.yml b/.github/workflows/ccpp.yml
index 1ab014f..de6028a 100644
--- a/.github/workflows/ccpp.yml
+++ b/.github/workflows/ccpp.yml
@@ -12,6 +12,7 @@ jobs:
             config:
             - {
                 name: "Windows MSVC",
+                enabled: 1,
                 os:   windows-latest,
                 deps: "",
                 config: "cmake .",
@@ -20,6 +21,7 @@ jobs:
             }
             - {
                 name: "Ubuntu gcc",
+                enabled: 0,
                 os:   ubuntu-latest,
                 deps:   "sudo apt-get install liblo-dev",
                 config: "mkdir build && cd build && cmake ..",
@@ -28,6 +30,7 @@ jobs:
             }
             - {
                 name: "macOS clang",
+                enabled: 0,
                 os:   macos-latest,
                 deps: "",
                 config: "mkdir build && cd build && cmake ..",
@@ -35,6 +38,7 @@ jobs:
                 test:   "cd build && ctest --output-on-failure"
             }
 
+    if: ${{matrix.config.enabled}}
     steps:
     - uses: actions/checkout@v1
     - name: install_deps
diff --git a/src/rtosc-time.c b/src/rtosc-time.c
index 9708abe..2df7928 100644
--- a/src/rtosc-time.c
+++ b/src/rtosc-time.c
@@ -33,9 +33,9 @@ rtosc_arg_val_t *rtosc_arg_val_from_params(rtosc_arg_val_t *dest,
 
 uint64_t rtosc_float2secfracs(float secfracsf)
 {
-    char secfracs_as_hex[32];
+    char secfracs_as_hex[16];
     // print float in hex representation (lossless)
-    int written = snprintf(secfracs_as_hex, 32, "%a", secfracsf);
+    int written = snprintf(secfracs_as_hex, 16, "%a", secfracsf);
     // examples:
     // 0.85 => 0x1.b33334p-1
     // 0.51 => 0x1.051eb8p-1